Dbit grinder modifications - Part 2
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- Опубликовано: 10 июн 2023
- Dbit grinder modifications - Part 1:
• Dbit grinder modificat...
Robin Renzetti - Deckel Clone Modifications:
• DECKEL CLONE MODIFICAT...
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I'm fairly sure you did a boo-boo CAD geometry mistake (at ruclips.net/video/uDY9NWtekrs/видео.html) when setting the angle for the flats on the end-stops... At least if I understand the intended usage correctly :) The range of movement should always be 90 degs?
The flats on the end-stops should be parallel to the line between the excenter pin center and the body rotation center, they shouldn't point directly at the body rotation center. If the pin is 5mm, they should be tangent to a 5mm circle at the origin (body rotation center)
Now you have a 90deg plus a little something range of movement when the excenter pin is at he furthest "out" position, and slightly LESS than 90deg when the pin is adjuste "in" towards the body center.
Great video as always :)
Yikes! Good catch, youre right, I just doublechecked in Cad. Thats annoying :D
I just redid the sketch in Cad, the Error is about 6 Arcminutes at 0,5mm excentricity, which results in an linear error of 0,1mm on a 200mm diameter circle.
I am trying to evaluate if that error will be a problem, but I think it will be fine-ish.
Otherwise, I will have to get the pins out again.
Thanks for having a second pair of eyeballs on the sketch.
I just torched the pins out to re-align them. Will do a quick follow up video 🙄🤣
@@StefanGotteswinter Wow, OK... so about a micron max error on a 1mm radius grind :) For this tool/application the error was extremely small, I just thought you should think about this geometry when you do something bigger / with higher precision demands :)
@@AJBtheSuede I am absolutely glad that you pointed it out. The fix was rather easy :)
what a great catch! it just goes to show " to err is human" and stefan is human enough to admit it publicly! (although he is still a machining God) chuckle.
“Because I’m stupid”….says the most brilliant machinist on RUclips! Lol
Spectacular content as usual. Thank you. Stefan.
Haha, wait for the follow up to this video. I messed up the pin alignment in Cad :D
Thank you!
Yippeee, a new Stefan video!
YIPPEE!
Dear Stefan......I had to put a Ice bag on my head,my brain was melting!
This was above my pay grade!😁👍
This is why I leave all this type of stuff to people like you.
Respect👍
Hi Stefan, Your channel is very interesting and your though process on your projects is something that shapes my order of operations when machining parts in my workshop. Your high attention to detail is something i am working towards as a hobby machinist. Thank you for your time and effort that you put into your content.
When we see something that may work better it's called DEVELOPMENT. That is a foundation of engineering. Nobody does it perfectly the first time.
You explained the pin-striking-radius irregularities quite well. Two thumbs up. 👍
Enjoy watching your solutions to situations. Renews my faith that there ARE intelligent people out there.
Don't worry about shit comments, we all know that you do your best every time. I really appreciate your work, still going as you do.
Thanks a lot Stephan!
That clamping solution with the ball pressed in the end of the screw was really nice as was changing the 90 degree stop to carbide. All inspiring work! Thanks as always.
I meant to ask why you think the original part was made the way it was. Your solution is SO much better at holding the shaft in place. The obvious answer is cost but isn’t this machine supposed to be a precision instrument or was “good enough” applied to balance cost vs. precision? Maybe the original wasn’t that great?
I believe that you are selling yourself short on not having sufficient skill or equipment. I always enjoy all of your videos and have learned so much.
Stefan, I learn a great deal from your videos and this one is no exception. At 30' you show a new clamping system to arrest the rotation without the "bevel gear" affect of the manufacturer's design. If (and this is ONLY IF) you wished to retain a downward clamping force along with a radial clamping force, one could use a pin with a single bevel that registers against a mating single chamfered groove on the axel, similar to the clamping system used to clamp the tool slide of South Bend shapers and Southbend, Boxford and Atlas lathes. The adjustable ball handle with the pressed in ball would, of course, bear against the pin to lock it all together. This is just a thought, in no way intended to criticize the solution shown in the video. Cheers, F.C.
Ahoi!
True, that would be a very solid solution, I like that.
I would pay a lot of money to see this shop in 20 years' time. Everything will run to a millionth of a millimeter.... even Stephan's heart will beat perfect nano second times.
Always a pleasure watching you work and explain in words I such a professional way. I'm having a hard time believing that somebody wold write bad things about you, I hope you don't taketh much notice of them. Thanks man.
Nicely done Stefan! My mind boggles on the thought of you take on the task of improving a quorn grinder :)
Thank you, Stefan!
It's always a real treat to see new videos by you! I learn something every time.
If it wasn't for shortages and insane shipping costs, I'd want to send you an entire sheet of self stick gold stars. You totally deserve them - and then some!
I'm still waiting on my gold stars for some stuff that I've done..... not to brag, especially not since many of those exploits were by the skin of my teeth.
Anyway, you are greatly appreciated and sorely missed when you don't post for a while.
Thank you soooooo much for continuing to do and share this stuff!!!!! 😊
Someday Stefan will make a video on "the quantum mechanics of tool positioning", I am sure.
Addendum: I work at a trade school (Berufsschule) and suggested this channel to several of the teachers there. They totally dig this kind of content.
Thanks for repainting it and sparing us eye cancer! 👍👍👍
I’ve been a sub since before the pandemic, and have learned alot from your nicely narrated pleasant videos. Thank you very much Stefan.
I was wondering when you were going to get back to this lol. It's coming together nicely Stefan, thank you for uploading! 👍👍
Thanks for sharing as always.. and the introspective around 20:00 was just way too lovely. Keep up the good work.
Very few of my friends have an interest in machining and mechanical engineering. So I am extremely thankful for your videos that let me see how other people solve small interesting problems in a workshop.
Thank you for yet another excellent video.
Hey Stefan, it really is a shame that you still get guys commenting that you aren't knowledgeable or that you'd be fired in their shop. I know you don't take it to heart, and you shouldn't. I think you're one of the most thoughtful, creative, and precise machinists out there. You and Robin are in a league of your own. Some of the ways you solve problems just blows my mind, and its clear from the commemts on every video that it blows other peoples minds too. I bet 90 percent of the people who comment negative crap don't record their own machining and put it on youtube, which is yet another layer of planning and execution. Your videos are some of the best teaching resources. I've referenced your videos a lot over the years to get better at machining. So at least from me, and probably most other people watching, thank you for that. Glad to see you back on the D Bit Grinder, amd hope you're doing well :)
Also, no matter how many times I see it, that Bema Surface Grinder is a thing of beauty!
When checking the counterbore for a screw head, put it in upside-down, it will be easier to remove.
Things i will never learn 🤣🙄
I always learn something from your videos. Thank you for taking the time and expending the effort. I have taught myself to weld and some machining skills and I wouldn't have been able to do it without channels like yours and the other usual characters. (Abom, Ave, this old Tony and others) Again, thanks.
Thank you for the kind words :)
Stefan, your series is incredible. Your using your knowledge and the equipment (which is old and reliable,thanks to your knowledge and expertise) produces amazing results. Well aware of time line and the ability to adapt to create a product on time. Fuck the people that judge your work. Well done. We all don’t live stuck to one machine. Your explanations are very well done, in a second language of all things. Thank you!
The most acetone-resistant gloves I have found are polyethylene food service gloves. PE is pretty permeable, so I'm sure the acetone still diffuses through, but at least they don't disintegrate.
Two channels fill me with joy when I see a new upload notification, TOT and Stefan - of course. (AVE fills me with joy and fear at the same time 😂)
I really love these modification videos.. Its great to see how a knowledgeable machinist would improve a product like this.. I have an old key cutting machine, just a cheap one that kind of gets the job done.. And I always wonder what some one with the knowledge would do to improve it.
Awesome video! Can't wait for part 3
Vielen Dank für deine Arbeit, die tollen Ideen und Inspirationen die du uns gibst 👍
I'm subscribed to probably close to 100 channels. Some great content, and very interesting creators. Of those, only about 3 cause me to just stop everything and watch a new release. Stefan, you are one of those 3. Thanks for all the great videos!
Funny, I like to wait at least a few hours on Stefan’s videos so I have more comments to read. It seems that he draws a lot of viewers that share a lot of their knowledge in the comment section with very few, if any, trolls. Still hard to wait to watch them though.
good job stefan..thanks for your time
Thanks for all the effort Stefan! Very enjoyable and educational like always!
Good stuff Stefan!
ATB, Robin
Thanks for another nice video, Stefan.
Thank you Stefan for another great video. I’m not a machinist but rather an autobody man of 33yrs so I always learn new things from you to do things in my shop. After watching so many of your videos I wish I had chose a career like yours when I was younger. Your work is WAY more interesting than what I do. However I don’t know if I could handle the math and geometry. Especially with complex parts. Nevertheless, I always enjoy your videos. Super cool and fascinating to me👍🙂
A new long Stefan video, that's what I needed, thanks!
You’re amazing man! I just love your content. Your attitude. And your willingness to share your experiences with us all. Rock on man! 💪🏾👍🏽
Another excellent video,Stefan.Thank you.
Come back soon please Stefan! Thanks for sharing your work . . .
Hi Stefan , that was very nice solution using the dbit to line up the stops . I love your attention to details , great job .
I feel like I always learn something from the techniques you choose to show and use. I've owned a D-bit grinder for less than a year and between you and Robin, I have so many ideas for how to use it and how to maybe modify it in the future. There have already been times when I wished the work head was more rigid so I'm very interested in your modifications.
What fun! Thanks Stefan.
This problem solving is great to see.
It has helped me a lot.
Nice mod with equally good explanation. Thanks.
Thanks Stefan. I love that drill press clamp that you have. It looks like it's capable of some serious holding power. Your moment arm setup looks similar to the one fitted to the Quorn tool and cutter grinder. Cheers, Preso.
Funny you mention that you might not of thought of one thing or another when in the shop at the time you recorded it. That often happens, after I get done with something. It becomes quite clear after the fact there was another often better way to get something done. Nevertheless it's done and working. It took me a long time to realize that it's the end result that matters and others don't always see things the same way you do. I try to remember that when I make a comment. Having said that, While the hard stop carbide pin modification is very clever and interesting. I really like your locking pin idea with the V shape. Something for me consider in future projects where such a device would be used. Cheers
Keep up with the great work!!
Sunday completed! thx
Thanks for sharing!
Nicely done Stefan 👍🏻🙂👍🏻
Hello Stefan, thank you for sharing your skills and great idea's with your interested hobbyist's, excellent work, cheers from me 😷👍👍👍
Hi Stefan. Hmm, say something constructive. Well, I'm very impressed with how you have identified areas for improvement and come up with viable solutions within the constraints of the original design. It takes experience, expertise and brains to do that. Cheers.
I learn so much from you. Thank you.
I won't say I read all the comments but I am really surprised that nasty comments have such an impact to deserve such a mention. On my part, patreon support, views and likes I thought were enough, but it seems that's not the case. If happy viewers don't express their happiness, then nasty comments do stand out.
So, starting from here: Thanks for spending the effort to document all that: your work is food for thought and a reference to me.
Technically, a scope would be yet another approach on locating the end-stop edge. I am a recent convert and have started using the scope more and more on the mill, it sure does have its place.
BR,
Thanos
We talked already privately, but I think i should put it out in public too - I think I worded my concern in the video a bit negative.
I absolutely appreciate all the comments, and in this case they pointed out a darn geometry error in my end-stop design.
The issue (And thats a personal thing) is, that sometimes all the "You should..", "you could.." or "what you realy should have done.." gets to me.
In overall I could not complain the least about the viewership and the commenters AND the support I get, if you people where a nasty bunch, I would not be here, doing what I do :-)
I'm happy to be here and learn; I have a great deal of that to do.
42:18 cut off twice and it's still too short 😉, great work as always! Thanks for sharing
Your contribution is appreciated by so many people, dont let a negative comment or 2 get to you.
Love another Stefan video! And Robrenz has a new one too! Party time! :D
Great vid.😁
looking forward to the next episode.
Stefan, just remember when people are rude or condescending, think they know better than you, all that nonsense, remember you will never find a hater better off than you are. Instead of directing attacks at you, what they end up doing is indicating their struggles to accomplish things and that they do not know how to process their feelings, among other things. Also, there are 3 ways to do things: the right way, the wrong way, and your way. Only one of those matters!
Funny thing, in this case my way was the wrong way :D
I messed the pin alignment/geometric relationships up.
That may be so. But it's an opportunity to learn a lesson, and when you learn the hard way, it really sinks in as well as offers insight and prompts you to go into problem solving mode. Making mistakes and learning through attempts is never the wrong way. You can find nuggets of knowledge on the way that are unexpected, you refine your problem solving and critical thinking abilities, you acquire a more intimate knowledge of the part than you likely would have. Nothing but benefits, in my humble opinion. Time is valuable, so when we fail, we must find ways to benefit from the experience, make sure the result of our time spent has value, as time is far too previous to waste. I think you do quite well, for what it's worth. Thank you for sharing with us!
I like your solution.
Stefan, Du wärst sicherlich ein sehr guter Manschinenbauingenieur geworden! Aber Du bist ja noch jung ... 👏👍🍀☀❤🛠😎
ohhh yeah, this is a treat
Good assembly video sir 👍
Great content as allways 👌👌😊
I’m not a macinist, But find your videos very entertaining
I don't know how many years you've been doing this but I think I would be safe in saying that you are journeyman machinist by trade and that people who would criticize need to keep that in mind.
To get around the hind-sight warriors you might have to make the video first, read the comments and THEN do the project :)
I did simliar....kind of.... mods to my d-bit grinder but I think i'm going to have it pull it apart again haha.
Seriously though, guys like you, Robin Renzetti, Joe Pieczynski and Adam Booth have made me way more skilled than I would be if I didn't follow. Thankyou for all your content!
Hey Stefan! Hope the year of discovery is going well!!!
At least i discovered 8 month old video footage on my harddrive 😄🤣🙄
@@StefanGotteswinter hahahaha. I was just looking for Part I
awesome thanks
Nice video Stefan I have an old deckel clone with cloth seals on the main shaft, be interested in seeing the detail on what seals you choose. Good project for some line boring. Always appreciate seeing your setups, and project ideas.
Dont mind the haters, they all have a role to play... got to feed the trolls a little to keep the engagement numbers high 😂
I didn't know that the 90° endstopp was ajustable :D Every Day i learn something new :)
In the spirit of the comment section: You did it wrong. Cheers man.
I actually did :D
Awesome, I thought you had forgotten about this project lol
Thanks Stefan
Its taunting me every day 🤣🙄
@@StefanGotteswinter 😂😂
That’s a pretty sweet grinder
That video from Robin the other day must have spurred you back into working on this project. I remember Robins d-bit grinder was quite tricked out.
хорошая работа 👍
Sweet moving text graphic!!
Complain?? No I'm rather amazed every time. That's why I'm subbed and enabled notifications :D
I was shocked when you dropped that pin in the 6mm hole for pre fitment, thinking "but how will he get it out again". But without mentioning you just casually use compressed air and it comes up. Mind blown
Hey man, dont worry about the new negative comments. Life is too short, trust me if I know. Keep going!
Очень грамотно все сделано спасибо за видео
Rumor: Stephan buys a new toothbrush and trams every bristle before use.
I believe that the green locktite can be used on pre assembled items,waning that it will work by just putting a bit on top of the assembled pins , and itself will glue the pins by capillary action
What a great imagination Stefan must have. You can’t build well without one.
Stefan- Civility is the word ( in American English) that I was taught by educated people in my lifetime. In new speak I believe it’s “ don’t be a Dick”.😊. An old adage ( is old adage an oxymoron?) is “hindsight is 20/20”. Iffn it works, you are golden. Iffn it doesn’t, you are more than accomplished to rectify. Always a pleasure to see you making me smarter! How is self employment working out? Miss the grind of a regular job? I would venture a guess that you might miss your coworkers?
So far it works out very well, I am very happy :)
I miss my coworkers, but my former bench neightbour goes bouldering with me every few weeks :)
Yes! The long awaited sequel!
Lets hope part 3 doesnt release in 2024.
@@StefanGotteswinter 6 seasons and a movie!
@@MgBaggg Going to build an entire cinematic universe! 🤣🙄
@@StefanGotteswinter that would be the most relaxing Cinema experience
Dont listen to anybody telling you are doing it wrong unless their name is Renzetti.😂
Oh boy :D
My SOE also fills in for a bench grinder. I have a Creusen and a Tormek but they take space and aren't needed very often so they have been sent to storage.
I…….love…….monoblock kopal clamps they are one of my fav tools
This video is kinda funny to me on account of one of your first videos about the Dbit grinder. Oh man, that feels like a whole life time ago.
But, seeing as i seem to have missed the first part, i'm going to have to watch that one first, which is good. Night time entertainment sorted. :)
Havent seen your name in a long time, hope you are ok? :-)
@@StefanGotteswinter As good as i can be, yeah. Work, life, all hectic, but that's normal for everyone these days. Hope you're ok too. Been watching the videos, but YT seems to be changing the code they're using every few months and it's been throwing my TV casting extension on the fritz, i'm clearly missing some videos. :))
Muito bom !
Around 11:30 the ball solution came to your mind to find the ends of the curved slot. That approach would require some extra math to actually calculate the end of the slot. I'd prefer a superglued 4.5 mm pin that you suggested just before that 'magic' moment.....
How did you clean the bubbling/overflowing of the loctite ? Or not, if it did not interfere with the pin movement ? PS: I love how you analyze designs to spot their limiations.
More acetone and some mechanical cleaning with a scalpel ;)
22:54 Same as acetone eating through gloves, it'll likely damage any filters in your camera lenses, careful when you send that stuff flying around!
Yeah, I keep some distance. Usually free fall and sudden stopping kills more lenses in my shop.
I have an Alexander grinder (Deckel copy) and the arrangement in this area is completely different. It's a lot more complicated and, in most ways, worse.
The main difference is that there is a rotating intermediate layer which sets the upwards swing angle. The angle graduations are on this layer, so you need to use this to set an angle.
This design has no way to release the constraint, so it can't (for example) grind a dovetail cutter. I have compensated for this to an extent by making a wheel arbour that allows me to grind on the back side of the wheel.
Snap. I'm thinking about making an alternative head to allow me to grind lathe tools , drills etc and fix the strange angle settings. I believe the gha machines were tailored to engraver use so perhaps they felt it was a better option.
What you describe is 1:1 the original Deckel solution - I am not 100% sure why they did it that way.
@@wktodd I haven't yet found anything that I can't grind by a combination of grinding upside down or with a reversed wheel.
I was looking for a 3D model of the reversed wheel hub, but it looks like I might have just winged it at the lathe.
It's weirder than you might anticipate. There is a hole down the middle to access a captive nut with a hex wrench. (made from the head of a socket-head screw). I don't recall why I did it that way but it might be that I simply didn't think of making a deep top-hat nut. Both are ways to get round the fact that the output shaft is short.
There is a very brief glimpse of the reversed hub in action here: ruclips.net/video/FJyby8HsAhU/видео.html
The 90 deg. pin in slot term is called "coining"
Stefan! Did you ever check if the movement in the slot actually was 90 deg?
Nice Video! Well done!
Matthias Fenner Toolworks, well, as Benny Hill once said 'so does mine' !