Just putting it out there for other hobbyist CNCers: Whenever possible, check the CNC's manual for recommended maximum spindle speeds and feed rates. Consider those numbers to be your absolute maximum--anything above MAX is changed to MAX. Anything below MAX becomes the new MAX for this project. Next check the bits you will be using and adjust your MAX and min values to be as close to the bit manufacturer's recommendation as possible. That will get you all started. People try to do these feed rate and spindle RPM adjustments on the fly, but that is probably what caused the problem in the first place. For example, plastic will melt if the feed rate and spindle speed are too high. Metals will react differently depending on the type and whether the metal is pure or an alloy. Sometimes the incorrect values will cause the material to work harden and destroy the tool. How to fix that depends on the material and the tool; fortunately, manufacturers have spent a lot of money figuring out the correct values so you wouldn't have to.
@@AmyMakesStuff I occasionally cut plastic at work, or talk to machinists who do, and the big things are: (a) have a super sharp cutter with as few flutes as possible. we use robbjack at work and they do a pretty good job. (b) get a compressor and blow air on the cutter -- this helps evacuate chips and cools the cutter so you don't melt the plastic. some plastics make "stringy" chips which can wrap around your cutter and ruin it or the workpiece (c) play around with feeds and speeds until you find something that doesn't melt the plastic. even though you can probably get away with max spindle speed, it may generate so much friction it'll melt the part. a slow feed and medium speed may be your best bet. your flexure parts remind me of the wire EDM work I used to do at my last job -- flexures are a super awesome way to make moving parts and i'm really impressed with your work! keep up the great work!
I think this channel must have passed some milestone in the YT algorithms... today is the first time it's shown me this channel too. Maybe Amy should expect the views to skyrocket soon!
The tool most likely stopped due to excessive vibration. You can't climb cut with a tiny tool with that much of the stock sticking out. Climb cutting is where your tool pulls itself along while cutting. This also causes tool deflection. Try to cut towards the cutting edge instead of away from it. Also leave as little stock sticking out as possible to reduce vibrations.
Hey Amy! I only just stumbled over your channel an I have to say I really like your approach on creating videos. You clearly state the reasoning behind your designs and also share your trials. Also, your honesty about your experience with the CNC machine is great and is a sign of integrity! I look forward to seeing more of your videos. Keep up the good work!
CNC Lathe machinist here! And I must say! I'd love to have a baby lathe amd desktop mill at my house! If not a 5th axis would be absolutely incredible! Thank you for your hard work Amy! Just found you today. But I must say. I'm very impressed and will be a new sub!
I have had the exact same "pausing" on other cheap cnc machines, and have come to the conclusion that it is due to electrical interference on the controller board. There are a lot of possible fixes that you can try such as grounding the spindle motor, and adding ferrite to cables (I went with wifi to completely get rid of communication issues), as well as grounding the bed.
Ive had a problems with the cheaper stepper drives used on 3d printers and cnc machines. Primary culprit has been heat, ensure they are being cooled properly or they will start doing weird stuff.
@@aaronwilliams7062 That would be my guess here too - since this happens only when cutting metal, it is likely the drivers simply overheat due to the extra load being put on them. And once that happens the thermal protection kicks in and shuts the machine down.
I appreciate your way of fixing things in ways no one else would have ever thought to. While your videos aren't published so often, they are amazingly interesting in their simplicity or quirkiness. Thank you for putting it out there for us to enjoy. p.s. I sometimes go down a rabbit hole or two when I'm creating so I know the feeling.
Nice video. I liked the very concise presentation without a lot of blather. Also, the fact that you didn't go right to the glowing review gives me confidence in the quality of the review.
Anyone with a vintage Craftsman 101/Atlas 618 lathe in the background is ok in my book. I cut my teeth on this very lathe some 40 years ago. You've got a brilliant mind and the ability to put it to practical use. In my line of work we're called two things. Practical Engineers and Troubleshooters/Problem Solvers. You appear to be cut from similar stock. Excellent design! Cheers! Zip~
" can't believe you've made it this far" ..... You showed up on my suggest videos. I will be happy to give you my criticism...... I have none! You do a great job on your videography and narration. I love seeing people with similar home shops making videos and you do a fine job! Keep up the good work!
Discovered this channel by accident. Without RUclips algorithm knowing, I was actually looking for inspiration to design a much simpler mechanism for a different use. Thanks for the tip!
Not the most useful thing in the world, but a very fun project. Instead of writing notes and killing trees for paper, having 1 solution that will work for a very long period of time is a great way of thinking. Also wanted to note simplicity of the project from the hardware point of view. Good job. Love to watch smart ladies making stuff.
Great video! Your flexure demonstrations are fun and easy to understand. Seeing the reset on day change was really satisfying. I also liked how you compared the linear flexures and pointed out the differences in deformation w/ and without nesting. A lot of other flexure videos are simple mechanisms that move then go back to their resting position, the end. I like how your projects have a theme of memory or saving state of movements, each advancement of the claw moves forward a day and the toggles save an on/off state for tasks. Thanks for the videos!
So glad that YT recommended this channel to me. Not only didn't you spend the first 10 minutes going "whasssup, yo, sub this channel" but also gave an honest opinion on stuff sent for review. Subbed, liked, commented... Keep this up please!
I need this, but with 3 toggles bc I feed my cat 3 times a day. This was the first video I have seen of yours, and I love the idea. It's always a pain to keep track of if the cat is fed.
I always appreciate makers sharing their trials and tribulation. Its a much more honest and realistic demonstration of the design process I wish more employers were aware of 🤣. This toggle reset is an awesome design. Any chance you're going to sell some of these? Between my two cats and my dog, something like this would sure come in handy!
Thing I am a fan of: 1. Flexures 2. Crafty Amy from Amy Makes Stuff I revisit these videos when I design flexures into things to examine how you achieve behaviors, so thanks for your contributions. Subscribed.
Wow. All we did growing up was write “I have been fed this morning” on a paper plate and the opposite on the back side. The paper plate just fit conveniently on top of the storage container. Feed the dog and flip the plate. That dog never let us miss a meal so it all worked.
The RUclips algorithm actually presents me with something of interest for once! Great video! Thank you! THIS is stuff that RUclips was originally meant for.
Well done Amy, it's fun to follow the process of invention and fabrication. Your designs are similar to MEMS devices I've seen -- Impressive. I think you have a bright engineering future ahead of you. The world is your oyster (as they say) -- yes, I rolled my eyes when I was told that when I was 17. At 62, semi-retired from Microsoft (xBox, DirectX), telecom startups, and Amazon Kindle Fire, I am still inventing, patenting ideas, and selling products I designed. I can and do use Solidworks, but I often use Fusion 360 because of the CAM (and for fast patent drawings), so I can drive both my large VMC CNC Mill, and a small one like you were asked to use (with the same issues). Right now I'm hiring some DARPA interns to help me on some very fun projects... anyway, keep up the good work and showing us the way.
Noice! Always love to see some awesome flexures. Two things about the CNCing process. 1. A large amount of that play seems to be due to a massive amount of end-mill runout. Around 1:26, you can see parts of the spindle vibrating. This could also be related to why the sound was so bad. 2. My guess on why this machine would not machine metal has to do with grounding. Sometimes, an improperly grounded controller or motor driver can reset the spindle and/or entire machine, similar to what you ran into. A grounding wire on the material/bed/chassis might help.
@@AmyMakesStuff Not to sound insulting, you clipped the collet INTO THE NUT FULLY, before putting it into the machine a few turns, then sliding the bit into the collet and tightening, right? I've seen 3 makers on here, place the collet into the nut without pushing it in til it clicked, just loose like a dremel collet, then putting the bit in, then tight tightening it onto the spindle. TONS of runout. The collets clip into the nut with a loud clink, they don't float. The reason the machine stops on metal is because it's shorting out. It has nothing to do with LOAD (like oh no, brass is so much harder to cut! spindle overloads and turns off due to heat/current. Nope.) Unfortunately this is a well known problem with pretty much all these tiny low-budget cnc machines. The good news is, the fix isn't expensive OR difficult. There's videos here on youtube about it, search "spindle grounding cnc" and also "spindle emi cnc" emi = electromagnetic interference. This is what's crashing the control board, turning the cnc off (spindle stops, stepper motors stop moving. it crashed and rebooted.) It's kind of a common problem, not just on inexpensive cnc's, but even big DIY cnc's! I just came across your channel and dig it. The idea for this project is great. No way it would work for me with my puddleofdogs, but a great idea none the less. GL, and check the collet and nut! Take it off completely and inspect it. Make sure there's no flashing or crud stuck in the cuts/slices in the collet that would keep one area from flexing properly as it gets cinched in the taper, and make sure it fully seats in the nut, and can rotate freely once it's clipped IN to the nut (out of the spindle).
Sounds like you (Amy) could verify / try temp fixing this by mounting the metal workpiece on top the plastic "sacrificial" plate like you did the calendar parts to insulate it from the metallic work surface. That way contacting the metal workpiece with the tool should have no electrical effect. If that "fixes" it, then it confirms the problem as stated above and you can pursue the ground and shielding methods knowing you aren't wasting your time chasing imagined fields and electrons ;)
First work I have seen of yours! You are freaking incredible! Great work, take pride in your intelligence and don't let *ANYBODY!* , men or women, have any semblance of a negative impact on your soul because they can't handle their own existence and/or lack of intelligence! *TAKE CARE AND BE WELL! YOU ROCK!* *ALSO SUBSCRIBED, WHICH IS RARE FOR ME! ESPECIALLY FOR A SINGLE VIDEO! THANK YOU KINDLY!*
Nice video! Another vote here on electrical interference or something causing the stopping when you cut metal. It could be interference, but it could be a false Z probe trigger. Many Z probes work by completing a circuit, so if there is something wrong with wiring or layout you could be seeing a false Z trigger which could stop the motor controller. That, or what the other commenter said about electrical interference simply crashing the controller. Thanks for the vid and for the detailed info on your setup!
Very well designed and then very well adapted to do the reset feature. Good example using the 2 samples to show less stress/ force required in a properly designed plastic machine flexure.
Hi. Your mechanisms are brilliant! I have a note to cnc machine: try to mill the material according to the recommended milling speed. It defines how thick the chip should be after machining.
I agree with aiming for the recommended speeds and feeds, but what do you do if your machine doesn't have the power output necessary to cut through the work?
My opinion on that mill is that it's garbage and it belongs where garbage should go. I base this on absolutely nothing but just how it kind of looks like it's a teenagers project - for which it would, of course, be amazing!
I'm here becuase my google discover recommended an article from Hackaday talking about this video in particular so i came to watch the video myself and I really like this cat calendar you made. What a lovely idea
I like my Snapmaker 2 - it is kinda expensive but for that pricepoint it can do all - 3d printing, cnc and laser. I still need to test CNC personally but overall its nice multifunctional machine for hobyists. Those flex mechanisms are interesting - I would probably still make some cover to give it more official/professional finish but thats just detail. This is first video I saw from this channel and I like the quality and content ... I will go to check some more ... its nice to see more and more make oriented channels with decent production and great informative value.
I just purchased this CNC but knew that I would be upgrading the spindle to a 500W motor. So far it is working well. I am using it to mill aluminum landing gear parts for RC jets.
Now the cat only has to learn how to move the day wheel around and it will automatically reset the feeding toggles. With the old model the cat had to switch feeding toggles back and reset the day of the week wheel. Well done for saving your cat time and effort!
I use flexures all the time in my normal day job and this is so cool! I really need to machine a set of demo flexures like you did, such a good demonstration to less technically inclined people!
@@AmyMakesStuff I design and build compliant automation systems with robots. Most of the compliant mechanisms I design use 6Al4V titanium with a design life of at least 10 million cycles. Besides being flexible, the flexure has to be reliable and have an adequate safety factor for long and productive use in its production environment.
General rule is the softer the material the less flutes on the endmill. A single flute endmill will give you night and day results on plastic be sure to setup your tool in Fusion 360 and use proper feeds and speeds. For aluminum a 2 flute endmill is usually best but aluminum tends to gum up on cutters so you have to keep it lubricated (WD-40 works great), ensure you are conventional milling to minimize radial load and ensure proper feeds and speeds. Take lots of shallow passes and it you should be fine. Small CNC's have limitations but it's amazing what you can get them to do with enough fiddling. I have an X-carve, I could barely get it to work at first but after a lot of trial and error and modifications I can cut and engrave thin aluminum without issue. Great video keep it up :)
Great vid, Amy - I love your stuff! I particularly enjoy your material on flexures, it’s informative and inspiring. I feel like it takes a different thought process (or at least a modification to my current one ;-) to think of flexures vs other more conventional construction. Your content on flexures plants little seeds in my head about them that I know will someday bear fruit in a project where they’ll be a perfect solution for my needs. Thanks again for your great content, keep it coming 👍😁
Really great video. I have found that cutting delrin, if you get stringy edges the cutter is not sharp. Try a fresh carbide bit. When looking at milling a part, and the precision you are looking for, ask yourself what the load on the tip is going to be and the direction. Ball mills have a unique cutting surface where the cutting speed is fast on the outer diameter and slow at the center. I generally use a lower feed for a ball mill than an end-mill when cutting the same depth. Remember everything is a spring, some are stiffer but all are affected by the load you place on them. If in doubt when cutting is fine cuts and slow feed. Some steels and nickel alloys are sensitive and require a lot of cooling. If the tool in not sharp all bets are off. Thanks for the video, it is great to see a real engineer / artisan in action. Peter
There is so much want in this video! Great presentation and review by the way. I've been looking at 3d printers and cnc machine's lately to assist me through projects and customizing my day to day living. Found you on accident and you've helped twice now, thanks!
Just a few thoughts from a machinist on cutting metal. Axial depth of cut is probably a bigger enemy here than feed per tooth. Feeding slower often causing the cutter to rub and generate a lot more heat - metal likes to be cut so a higher feed rate seems counter intuitive but often works better. Try stiffening up the tooling by reducing the stick out as much as possible and also, you mentioned having to brush swarf away - I wonder if you could turn your spindle into a fan too to blow it away. Messy but my help keep the work piece cool and flutes clear. And great job by the way! Your design is brilliant.
Great work! Love the presentation and the tone as well. You should consider releasing the project as a 3d printable. I think you might be able to generate a good amount of interest as "the resident 3d printed flexure person"
Awesome video, love the mechanism! Thinking the problem with the brass machining was the rake on your mills, brass typically requires a zero rake or even negative to avoid binding up.
Heeey that was a nice surprise:) your mechanisms are great and you found a very creative use of them. Wow ... the branding idea came to my mind just a second before you mentioned it and i was .. yes!:) edit > use smaller diameters i cut such compliant mechanisms with 1mm dentist bits on high speed high feed and very thin layers.
my favorite thing about your videos is that you share the mistakes and learning process. it’s generous and the mark of a true maker!
This is the first video I’ve seen of Amy, but also appreciated seeing the whole process. :)
@@davidolszeski3982 haha same here
It's so refreshing to have a video without 8 layers of background music going on. Just a nice quiet monolog over an interesting video
Thank you!!
I like your chill/laid back nature while doing so much cool stuff!
Just putting it out there for other hobbyist CNCers: Whenever possible, check the CNC's manual for recommended maximum spindle speeds and feed rates. Consider those numbers to be your absolute maximum--anything above MAX is changed to MAX. Anything below MAX becomes the new MAX for this project. Next check the bits you will be using and adjust your MAX and min values to be as close to the bit manufacturer's recommendation as possible. That will get you all started.
People try to do these feed rate and spindle RPM adjustments on the fly, but that is probably what caused the problem in the first place. For example, plastic will melt if the feed rate and spindle speed are too high. Metals will react differently depending on the type and whether the metal is pure or an alloy. Sometimes the incorrect values will cause the material to work harden and destroy the tool. How to fix that depends on the material and the tool; fortunately, manufacturers have spent a lot of money figuring out the correct values so you wouldn't have to.
thank you! 😊
@@AmyMakesStuff I occasionally cut plastic at work, or talk to machinists who do, and the big things are: (a) have a super sharp cutter with as few flutes as possible. we use robbjack at work and they do a pretty good job. (b) get a compressor and blow air on the cutter -- this helps evacuate chips and cools the cutter so you don't melt the plastic. some plastics make "stringy" chips which can wrap around your cutter and ruin it or the workpiece (c) play around with feeds and speeds until you find something that doesn't melt the plastic. even though you can probably get away with max spindle speed, it may generate so much friction it'll melt the part. a slow feed and medium speed may be your best bet.
your flexure parts remind me of the wire EDM work I used to do at my last job -- flexures are a super awesome way to make moving parts and i'm really impressed with your work! keep up the great work!
I get excited whenever I see your videos pop up in my notifications. Great video as usual.
Thank you, I appreciate that 😊
"I can't believe that you made it this far", you're just so humble. I enjoyed every single second of this video
Thank you. This is the first video I have watched from you. First impression - level headed and competent combined with smooth delivery.
I think this channel must have passed some milestone in the YT algorithms... today is the first time it's shown me this channel too. Maybe Amy should expect the views to skyrocket soon!
The tool most likely stopped due to excessive vibration. You can't climb cut with a tiny tool with that much of the stock sticking out. Climb cutting is where your tool pulls itself along while cutting. This also causes tool deflection. Try to cut towards the cutting edge instead of away from it. Also leave as little stock sticking out as possible to reduce vibrations.
Very nicely done. This is my first visit here, but won't be my last. Stay well and keep up the good work. New sub !
Me too.
Hey Joe! I love seeing my favorite RUclipsrs in places lol.
same ^^^
This!.
Hey Amy! I only just stumbled over your channel an I have to say I really like your approach on creating videos. You clearly state the reasoning behind your designs and also share your trials. Also, your honesty about your experience with the CNC machine is great and is a sign of integrity!
I look forward to seeing more of your videos. Keep up the good work!
I love that you have all of that stuff in the kitchen.
I wish I met someone like you.
Craft the world! Together ❤
Amy, I genuinely appreciate your transparency and integrity in making these videos. Subbed, upvoted, impressed. Keep up the great work.
CNC Lathe machinist here! And I must say! I'd love to have a baby lathe amd desktop mill at my house! If not a 5th axis would be absolutely incredible! Thank you for your hard work Amy! Just found you today. But I must say. I'm very impressed and will be a new sub!
Thank you for the kind words and the sub!!
The perfect combo of interesting topic well treated , charming smile and beautiful voice.
I have had the exact same "pausing" on other cheap cnc machines, and have come to the conclusion that it is due to electrical interference on the controller board. There are a lot of possible fixes that you can try such as grounding the spindle motor, and adding ferrite to cables (I went with wifi to completely get rid of communication issues), as well as grounding the bed.
Yes, can confirm. I solved that by soldering capacitors to the motor terminals.
So is it interference crashing the controller? Would another solution be to drive the spindle from a solid-state relay and a seperate power supply?
I had good luck with ferrite chokes on the USB cable connecting the board to the computer - this fixed my issues.
Ive had a problems with the cheaper stepper drives used on 3d printers and cnc machines. Primary culprit has been heat, ensure they are being cooled properly or they will start doing weird stuff.
@@aaronwilliams7062 That would be my guess here too - since this happens only when cutting metal, it is likely the drivers simply overheat due to the extra load being put on them. And once that happens the thermal protection kicks in and shuts the machine down.
I appreciate your way of fixing things in ways no one else would have ever thought to. While your videos aren't published so often, they are amazingly interesting in their simplicity or quirkiness.
Thank you for putting it out there for us to enjoy.
p.s. I sometimes go down a rabbit hole or two when I'm creating so I know the feeling.
Thank you ❤️
I just found your channel and instantly thought how underrated it is
Nice video. I liked the very concise presentation without a lot of blather. Also, the fact that you didn't go right to the glowing review gives me confidence in the quality of the review.
"you'd have a lot of fun trying to modify it" that's what I loved to hear :D. Great video
Anyone with a vintage Craftsman 101/Atlas 618 lathe in the background is ok in my book. I cut my teeth on this very lathe some 40 years ago. You've got a brilliant mind and the ability to put it to practical use. In my line of work we're called two things. Practical Engineers and Troubleshooters/Problem Solvers. You appear to be cut from similar stock. Excellent design! Cheers! Zip~
" can't believe you've made it this far" ..... You showed up on my suggest videos. I will be happy to give you my criticism...... I have none! You do a great job on your videography and narration. I love seeing people with similar home shops making videos and you do a fine job! Keep up the good work!
That vacuum reveal was satisfying af
Also very ingenious design!
😂 thank you!
Discovered this channel by accident. Without RUclips algorithm knowing, I was actually looking for inspiration to design a much simpler mechanism for a different use. Thanks for the tip!
Not the most useful thing in the world, but a very fun project. Instead of writing notes and killing trees for paper, having 1 solution that will work for a very long period of time is a great way of thinking. Also wanted to note simplicity of the project from the hardware point of view. Good job. Love to watch smart ladies making stuff.
YOU'RE BACK!
😂
@@AmyMakesStuff your video is another masterpiece!
You're definitely good at this
Great video! Your flexure demonstrations are fun and easy to understand. Seeing the reset on day change was really satisfying. I also liked how you compared the linear flexures and pointed out the differences in deformation w/ and without nesting.
A lot of other flexure videos are simple mechanisms that move then go back to their resting position, the end. I like how your projects have a theme of memory or saving state of movements, each advancement of the claw moves forward a day and the toggles save an on/off state for tasks. Thanks for the videos!
Thank you so much for the positive feedback! 😊
I've only seen 90 seconds and this is my new favorite channel.
So glad that YT recommended this channel to me. Not only didn't you spend the first 10 minutes going "whasssup, yo, sub this channel" but also gave an honest opinion on stuff sent for review. Subbed, liked, commented... Keep this up please!
"Can't believe you made it this far," don't count yourself out, this was very interesting to watch for a hobby engineer like myself~! :D
I need this, but with 3 toggles bc I feed my cat 3 times a day. This was the first video I have seen of yours, and I love the idea. It's always a pain to keep track of if the cat is fed.
I love hearing precise well spoken English, great presentation😃
I always appreciate makers sharing their trials and tribulation. Its a much more honest and realistic demonstration of the design process I wish more employers were aware of 🤣.
This toggle reset is an awesome design. Any chance you're going to sell some of these? Between my two cats and my dog, something like this would sure come in handy!
Happy for you that this got picked by the algorithm. Really interesting video, will have to watch the back catalogue now!
wow, lovely to see someone making compliant mechanisms, they are really really cool
I took a gamble with the RUclips algorithm, and I'm really glad I did! Great video!
RUclips recommended this to me and I’m glad I watched it. I occasionally watch science videos like this but this is really cool.
Thanks for watching 😊
Im so happy to see a woman with a makers-channel! I am subbing now!
Dont be too surprised we "made it this far". You're brilliant, so i need to subscribed as well
thank you!! 😊
Thing I am a fan of:
1. Flexures
2. Crafty Amy from Amy Makes Stuff
I revisit these videos when I design flexures into things to examine how you achieve behaviors, so thanks for your contributions. Subscribed.
Wow. All we did growing up was write “I have been fed this morning” on a paper plate and the opposite on the back side. The paper plate just fit conveniently on top of the storage container. Feed the dog and flip the plate. That dog never let us miss a meal so it all worked.
That’s a great simple solution!! I admit that this project has evolved to be way more about flexures than the cat (sorry, Sylvester)
*fitted
The RUclips algorithm actually presents me with something of interest for once!
Great video! Thank you! THIS is stuff that RUclips was originally meant for.
You are very modest. I had no trouble "making it this far" (to the end). Very enjoyable 5 1/2 min video review. Thanks very much.
Thank you so much for watching! 😊
Well done Amy, it's fun to follow the process of invention and fabrication. Your designs are similar to MEMS devices I've seen -- Impressive. I think you have a bright engineering future ahead of you. The world is your oyster (as they say) -- yes, I rolled my eyes when I was told that when I was 17. At 62, semi-retired from Microsoft (xBox, DirectX), telecom startups, and Amazon Kindle Fire, I am still inventing, patenting ideas, and selling products I designed. I can and do use Solidworks, but I often use Fusion 360 because of the CAM (and for fast patent drawings), so I can drive both my large VMC CNC Mill, and a small one like you were asked to use (with the same issues). Right now I'm hiring some DARPA interns to help me on some very fun projects... anyway, keep up the good work and showing us the way.
Noice! Always love to see some awesome flexures.
Two things about the CNCing process.
1. A large amount of that play seems to be due to a massive amount of end-mill runout. Around 1:26, you can see parts of the spindle vibrating. This could also be related to why the sound was so bad.
2. My guess on why this machine would not machine metal has to do with grounding. Sometimes, an improperly grounded controller or motor driver can reset the spindle and/or entire machine, similar to what you ran into. A grounding wire on the material/bed/chassis might help.
I hadn’t thought of that! Interesting theory 🤔
Totally agree about the grounding, seems the machine is resetting as soon as it makes contact .vacuum does it to my 6040 with static.
@@AmyMakesStuff Not to sound insulting, you clipped the collet INTO THE NUT FULLY, before putting it into the machine a few turns, then sliding the bit into the collet and tightening, right? I've seen 3 makers on here, place the collet into the nut without pushing it in til it clicked, just loose like a dremel collet, then putting the bit in, then tight tightening it onto the spindle. TONS of runout. The collets clip into the nut with a loud clink, they don't float.
The reason the machine stops on metal is because it's shorting out. It has nothing to do with LOAD (like oh no, brass is so much harder to cut! spindle overloads and turns off due to heat/current. Nope.) Unfortunately this is a well known problem with pretty much all these tiny low-budget cnc machines. The good news is, the fix isn't expensive OR difficult. There's videos here on youtube about it, search "spindle grounding cnc" and also "spindle emi cnc" emi = electromagnetic interference. This is what's crashing the control board, turning the cnc off (spindle stops, stepper motors stop moving. it crashed and rebooted.) It's kind of a common problem, not just on inexpensive cnc's, but even big DIY cnc's!
I just came across your channel and dig it. The idea for this project is great. No way it would work for me with my puddleofdogs, but a great idea none the less. GL, and check the collet and nut! Take it off completely and inspect it. Make sure there's no flashing or crud stuck in the cuts/slices in the collet that would keep one area from flexing properly as it gets cinched in the taper, and make sure it fully seats in the nut, and can rotate freely once it's clipped IN to the nut (out of the spindle).
@@dogsarebest7107 this sounds like solid advice that I will be taking if my career ever veers into this direction.
Sounds like you (Amy) could verify / try temp fixing this by mounting the metal workpiece on top the plastic "sacrificial" plate like you did the calendar parts to insulate it from the metallic work surface. That way contacting the metal workpiece with the tool should have no electrical effect. If that "fixes" it, then it confirms the problem as stated above and you can pursue the ground and shielding methods knowing you aren't wasting your time chasing imagined fields and electrons ;)
i just love the way amy speaks. makes me happy
First work I have seen of yours! You are freaking incredible! Great work, take pride in your intelligence and don't let *ANYBODY!* , men or women, have any semblance of a negative impact on your soul because they can't handle their own existence and/or lack of intelligence!
*TAKE CARE AND BE WELL! YOU ROCK!*
*ALSO SUBSCRIBED, WHICH IS RARE FOR ME! ESPECIALLY FOR A SINGLE VIDEO! THANK YOU KINDLY!*
That's an awesomely simple & straight forward designed mechanism.
Very cool project and introduction into your design thinking. And vocabulary. Cool new word: flexure. And great street cred for using JB Weld.
I really appreciate the lessons learned with the creation of your projects. Give me more things to think about when making my own parts!
Nice video! Another vote here on electrical interference or something causing the stopping when you cut metal. It could be interference, but it could be a false Z probe trigger. Many Z probes work by completing a circuit, so if there is something wrong with wiring or layout you could be seeing a false Z trigger which could stop the motor controller. That, or what the other commenter said about electrical interference simply crashing the controller. Thanks for the vid and for the detailed info on your setup!
Great vid Amy. I admire your honesty. You’ve got yourself another subscriber. Keep up the good work!!!
Thank you! 😁
Very well designed and then very well adapted to do the reset feature.
Good example using the 2 samples to show less stress/ force required in a properly designed plastic machine flexure.
I appreciate the comment, thanks for watching!
Very objective and down to earth presentation, excellent. Thankyou for sharing your experience with this. The smile at the end was a surprise, cute 😉
Great work. I really like seeing all the different designs with compliant mechanisms.
Amazing idea Amy! Always a pleasure to check out your inventions 😀
Thank you! 😁
Super smart way of rethinking mechanisms! I like your laser cutting plan! Good luck! Subbed
Props for the honest review of the cnc even though it was gifted.
Hi. Your mechanisms are brilliant! I have a note to cnc machine: try to mill the material according to the recommended milling speed. It defines how thick the chip should be after machining.
I agree with aiming for the recommended speeds and feeds, but what do you do if your machine doesn't have the power output necessary to cut through the work?
My opinion on that mill is that it's garbage and it belongs where garbage should go. I base this on absolutely nothing but just how it kind of looks like it's a teenagers project - for which it would, of course, be amazing!
"After hours of not accomplishing anything..." I feel called out. Also, that mechanism is sweet as hell. :D
😂
I'm here becuase my google discover recommended an article from Hackaday talking about this video in particular so i came to watch the video myself and I really like this cat calendar you made. What a lovely idea
I like my Snapmaker 2 - it is kinda expensive but for that pricepoint it can do all - 3d printing, cnc and laser. I still need to test CNC personally but overall its nice multifunctional machine for hobyists.
Those flex mechanisms are interesting - I would probably still make some cover to give it more official/professional finish but thats just detail. This is first video I saw from this channel and I like the quality and content ... I will go to check some more ... its nice to see more and more make oriented channels with decent production and great informative value.
Your opinion on the mill got you a new sub here. Well done!
I just purchased this CNC but knew that I would be upgrading the spindle to a 500W motor. So far it is working well. I am using it to mill aluminum landing gear parts for RC jets.
that's great to hear!
Now the cat only has to learn how to move the day wheel around and it will automatically reset the feeding toggles. With the old model the cat had to switch feeding toggles back and reset the day of the week wheel. Well done for saving your cat time and effort!
😂😂😂
I use flexures all the time in my normal day job and this is so cool! I really need to machine a set of demo flexures like you did, such a good demonstration to less technically inclined people!
Oh wow, please say more about your normal day job!
@@AmyMakesStuff I design and build compliant automation systems with robots. Most of the compliant mechanisms I design use 6Al4V titanium with a design life of at least 10 million cycles. Besides being flexible, the flexure has to be reliable and have an adequate safety factor for long and productive use in its production environment.
So cool!!!
General rule is the softer the material the less flutes on the endmill. A single flute endmill will give you night and day results on plastic be sure to setup your tool in Fusion 360 and use proper feeds and speeds. For aluminum a 2 flute endmill is usually best but aluminum tends to gum up on cutters so you have to keep it lubricated (WD-40 works great), ensure you are conventional milling to minimize radial load and ensure proper feeds and speeds. Take lots of shallow passes and it you should be fine. Small CNC's have limitations but it's amazing what you can get them to do with enough fiddling. I have an X-carve, I could barely get it to work at first but after a lot of trial and error and modifications I can cut and engrave thin aluminum without issue. Great video keep it up :)
Great vid, Amy - I love your stuff!
I particularly enjoy your material on flexures, it’s informative and inspiring. I feel like it takes a different thought process (or at least a modification to my current one ;-) to think of flexures vs other more conventional construction. Your content on flexures plants little seeds in my head about them that I know will someday bear fruit in a project where they’ll be a perfect solution for my needs. Thanks again for your great content, keep it coming 👍😁
Very interesting and well presented. Thank you, Amy.
Looking forward to more like this one.
thank you for watching!!
Really great video. I have found that cutting delrin, if you get stringy edges the cutter is not sharp. Try a fresh carbide bit. When looking at milling a part, and the precision you are looking for, ask yourself what the load on the tip is going to be and the direction. Ball mills have a unique cutting surface where the cutting speed is fast on the outer diameter and slow at the center. I generally use a lower feed for a ball mill than an end-mill when cutting the same depth. Remember everything is a spring, some are stiffer but all are affected by the load you place on them. If in doubt when cutting is fine cuts and slow feed. Some steels and nickel alloys are sensitive and require a lot of cooling. If the tool in not sharp all bets are off.
Thanks for the video, it is great to see a real engineer / artisan in action.
Peter
Awsome parts. Love how generous you were with the cnc review. It's ok we all know it's a huge POS.
The algorithm sent me! Cool video! You've definitely got a new subscriber :)
First time in your channel. 27k sub is well under rated
Flexible mechanisms are way under rated. Hope you do some more. Perhaps a 2022 calandar
Your old video was amazing so glad you doing another !
Thank you!!
There is so much want in this video! Great presentation and review by the way. I've been looking at 3d printers and cnc machine's lately to assist me through projects and customizing my day to day living. Found you on accident and you've helped twice now, thanks!
Thanks for watching!!
New subscriber here. I can’t wait to see what you have in store for us.
Cool project Amy! Really highlights how rigidity and sufficient power are required for metal machining :)
I know nothing about engineering. Thanks for the crash course; no idea why Google led me here. Subscribed nonetheless
Just a few thoughts from a machinist on cutting metal.
Axial depth of cut is probably a bigger enemy here than feed per tooth. Feeding slower often causing the cutter to rub and generate a lot more heat - metal likes to be cut so a higher feed rate seems counter intuitive but often works better.
Try stiffening up the tooling by reducing the stick out as much as possible and also, you mentioned having to brush swarf away - I wonder if you could turn your spindle into a fan too to blow it away. Messy but my help keep the work piece cool and flutes clear.
And great job by the way! Your design is brilliant.
Great work! Love the presentation and the tone as well. You should consider releasing the project as a 3d printable. I think you might be able to generate a good amount of interest as "the resident 3d printed flexure person"
I've never heard the word "flexure" before. Thank you.
Hello Amy, my english is bad, but i watch your videos, it's very intresting!
Thanks for watching!
Great Video 😊 the Part looks good and you look even better
Glad the algorithm picked up your channel! (I have no idea how long a comment needs to be for it to count as engagement. Words!)
Welcome back!
Thanks! 😅
First time here. But I love you no nonsense build and video. You rock! Thanks!
Super cool. Glad the algorithm brought me here 🙂 Your content looks really interesting and I’ve just subscribed
Yay! Flexures are good and your like is well earned. Very cool
Brilliant and honest. Perfect.
Air assist on laser is vital…
Thanks amy.I learnt a new word today,for that alone you get a new subscriber.
Nice Video and a completely underrated channel 🙊
First time seeing 1of your Video's, thanks for sharing and I look forward to seeing morenofnyour creativity
Awesome video, love the mechanism! Thinking the problem with the brass machining was the rake on your mills, brass typically requires a zero rake or even negative to avoid binding up.
im loving this channel! I’d love to see some of your Fusion 360 workflow sometime 😊
Ok!
Keep going. Make more things and make more videos. You have what it takes. People will watch, you can do this.
In love the device, design, and imperfection
Glad you're back. Hope to see more vids.
Thank you! (And I know it’s been a while, thanks for being patient!!)
Heeey that was a nice surprise:) your mechanisms are great and you found a very creative use of them. Wow ... the branding idea came to my mind just a second before you mentioned it and i was .. yes!:) edit > use smaller diameters i cut such compliant mechanisms with 1mm dentist bits on high speed high feed and very thin layers.
What a cool flexure mechanism! Thank you for showing us this project.
It is soo great to watch girls doing mechanical stuff great video