Calculating Feeds and Speeds A Practical Guide | Wood CNC Router
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- Опубликовано: 27 авг 2020
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Calculating Feeds and Speeds can be overwhelming, but it does not have to be. I go over a practical guide for a beginner to understand and calculate feedrates and RPM.
Downloadable Excel Feeds and Speeds Sheet!!
docs.google.com/spreadsheets/...
Chipload Description - 1:11
Calculating Feeds and Speeds on Excel - 6:54
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This is EXACTLY what I have been looking for. I toasted 3 1/4" bits by going too slow thinking I was helping the bit out.
The best explanation on chip load I've encountered to date.
Mate, I ripped straight in after watching this video and it felt like my machine has transformed. Thanks from Australia!
Man this is exactly what I have been looking for!!! Power is truth and knowledge!!!
You saved the day!!!!
Thank you!!!
Chris
I couldn't thank you more for this video. I own a shapeoko 3 XXL with an 800W water-cooled spindle and since I follow your advices on wood/mdf I "see the light" and understand how to work properly. Seriously RUclips is full of incorrect advice on machining, you and others convinced me that so-called "aggressive" feed-rates are not agressive, but actually the correct way to go for the tool and the material. You've changed my perspective, thanks!
Nice work!! A few years ago I rebuilt an old 1962 Shopsmith lathe. When I turned it on at the lowest speed I thought it was going crazy fast. I chucked a 8" diameter small log into it and when it spun up all the bark flew straight off. I just stood back and watched it for a few minutes. Over time I gained confidence in the ability of the machine to take the vibration and ended up running it faster and faster. I just built a CNC and playing with the different ways to create and feed it g-code. Like any other hobby the internet is mostly full of bullshit sales pitches or Pinterest, Etsy garbage. I know exactly what I am going to do. I made screen shots of the information you presented. I will make a spreadsheet that works and put it on google drive. In fact all of the information I am gathering is going there once I parse it all out and sort through the good vs bad. It makes sense to run a machine slow at first. You want to be sure it is mechanically sound. After that.... I want to know how fast I can push it. Why waste time if you don't have to!!
Thanks for making the video!!
This is what I've been trying to find. Found a bunch of internet gurus on forums being dicks and all they had to say is what you just did.
Thanks for being helpful.
That’s why I started this channel! That’s all I found out there too
This was great. I have ask many of CNC operaters about feed and speed. This has answered many of my questions. Thanks for the information. Keep the videos coming.
I have spent a lot of time today watching videos to help me understand this only to still be confused. Thanks for making it simple to get. I wish I just started and ended with your video!
Best ever beginner intro to feeds and speeds - PLEASE give us a metric version of this. Many thanks.
You can always use my calculator which is based on this video and this excel informatyksiedlce.pl/_PROJECTS/chipload_calc/
@@madeathome4057 gives me ..This site can’t be reached
@@fenders9911 I have some problems with server, it working again
Down to earth and still gets the nuance/importance of everything across. I built my own hobbyist machine, and this plus your other videos have been so helpful on determining limits in how to run it and consider upgrades. So glad I found your channel, thanks!
Thank you:) I have many videos coming next year
@@cutting-it-close Hi! Could I ask you, do you utilize the chipload .004-0.06" with, designated in the chipload chart, for a 1/8 bit to cut plywood or other wood material? It's look for me too aggressive, because referensing to this chipload chart I have broken two 1/8 bits (one straigh and another spiral upcut one, both with two flutes) using .003" chip load which even less then the lowest border of the chipload range (the cutting paramets I have used for this where 16000 rpm, chipload = .003" and respectivly Cutting feed rate = 96", DOC=0.125").
I already feel more confident to try different settings after this. That chart is super super handy thank you for the time put for this video it really stands out from anything else out there on YT.
More than 6 months later finally stumbled on your channel. Great informative video. Thank you.
Welcome!
Awesome video. This actually made a lot of sense to me. I'm looking into my first CNC so I have taken a screen shot of your chart and will definitely take it into account.
Just watched four of your videos. Best down to earth, nuts and bolts information in an easy to understand format. Great job.
Exactly what I have been looking for, simple explanation based in the reality of working with wood on a small CNC! Thanks for sharing the spreadsheet too.
Thanks for a great video. Finailly understand Chip Load, Feed Rate etc. I have an X-Carve 750 that I bought in 2016 and havn't used for awhile. I did download your spreadsheet and modified it for my situation. I never use bits over 1/4" and go as small as 1/32". I did a calibration test carve yesterday and finally have it dialed in. Definatly making chips not dust now. PS I fided the spelling error in the spreadsheet too. Thanks again and I am now a subscriber
I definitely left this video with more knowledge than when I started.
Thank you very much, I think you have just helped me save a small fortune in broken bits and damaged materials 👍
i just got my cnc yesterday. this was opposite of what I thought I was supposed to do. Thanks so much. luckily I haven't cut anything yet.
Nice. Thanks for that! Looking forward to more videos in the future!👍😁
Oh, and don't forget single flute bits for the small routers that can't move fast enough for the feed speeds required for a twin flute!
I am a tool and die maker, you nailed it. Great job and best explanation I have ever heard.
Finally found a video that explains this confusing part of it all. Thanks my friend!
Terrific, thanks for the education. Couple of follow-up questions. Thanks again for you concise, hi-energy, and efficient effort...much appreciated.
OMG, this is the best explain in whole youtube, so simply explain so sophisticated and suptile thing in CNC machining.
Thank you very much.
Nice simple explanation with real world production examples. Awesome!
Quite an informational video! Thanks to this i was able to do my very first PVC cut perfectly
Wow... seriously i read a lot on that.. And you make it very clear ! Congrats !!
Thanks for the, easy to follow, explanation. This has explained a lot as to why I’m using up 1/4” bits on my hobby CNC machine.
I have a great video coming out tomorrow explaining this more, you’re going to love it!
Terrific explanation - this is helpful and exposed a fundamental flaw in my thinking. I have a Laguna IQ because several people recognized this as a strong entry level CNC and claimed it could do everything the larger footprint CNCs could do, just couldn't handle large sheets of plywood. After two of your videos in the last two days, the one on different types of CNCs I realize I have been sadly mistaken.
Key lessons I learned from your videos:
1. I mostly use 1/4 inch bits, but when I had an option I would buy 1/2 inch bits because I read somewhere these were better to use in routers and CNCs (opps)
2. When my Laguna would make lot's of noise while cutting, I was slowing down the feedrate. whenever i was concerned about overheating the bit (1/4 ' mostly) i would slow down the feedrate - not increase it.
Need to rethink my approach - I wonder how much damage I am doing to the Amana Bits i have been buying. Thanks still catching up with your information - very helpful. Double thumbs up from me. i realize how long this video production takes - I sure hope it starts paying back for you. With your other business this has got to be tough to manage.
The second I saw the spreadsheet you got the Sub&Like!! lol. THANK YOU!
Found your channel via Andy And am sure I am going to learn a lot here!!!
Glad to have you on! Do you own a CNC? Or want to start a business? What brings you in?
@@cutting-it-close I have a laser which I just bought and am looking at a cnc to compliment it. I hope to start with small items to get my feet wet. I need to learn a lot!!!
Same, I’m trying to learn as much as I can while waiting on my machine to arrive
I have a laguna IQ and this video is just what i needed to set my speeds and feeds. I like the part about reading the chip that is super helpful. A video about how to hold down the wood and various fixturing would be a video i would like to see. Thanks your channel is always helpful and you are a great teacher
By far the best explanation of chip load that I have heard! Well done
It's been a while but this video is still very useful today. congratulations, my cnc is small 1000mm x 800mm with 315oz motors 1605 spindle, I did a test flattening the sacrifice table at 6000mm/min really when the machine can cut within those parameters mentioned by you, it's another level although 6000mm/min was the maximum I could at the moment. here in Brazil homemade machines make a lot of dust 🤭 today I managed to make some grains, and it gets a lot less dirty.
Thanks, very useful. I am new to CNC, and your guide is what I need.
Excellent display of chip load....well done sir and thank you for the explanation.
Thank you so much I'm new to CNC and this explains why it smells like burning wood in my shop :) I was doing everything opposite to what I'm supposed to be running at for my machine.
Great video! Thanks for taking the time to explain it in the manner that you did.
Loving this channel! Finally someone who speaks my language. Keep it up brother!!
Great information. Thanks for sharing your accumulated experience.
Awesome buddy, many thanks for all the explanation and the excel! Cheers
Great instructional video. Thanks for sharing!
Great video! Very informative. Love the catchphrase at the end.
Dude! You saved me some grief. Thanks! Getting my first machine soon so that will help with bit selection.
This was very informative. Nice to get input from a professional. Thank you.
Thanks for the video. This is the info I have been looking for!
Great information. Keep them coming we love all the effort.
@@cutting-it-close I think it's just right using everyday items to explain and demonstrate like your "hands" makes it easier for the untrained like me to understand.
This was really helpful! Thanks Ryan.
Brilliant video and thank you for the spreadsheet 👍🏼👍🏼👍🏼
Thank you very much for this incredible video!
Wow, that was eye opening. I am going try this and see if my bit and material survives.
insanely helpful video - thank you for putting this together
Thank you for the video. May I suggest in your excel sheet to colour code your answers based on ranges of input. If the 1/8 bit is used, hardwood is used, enter feed rate, rpm, number of flutes. If the answer is below the range, show the number and colour the box into pink. If within range, it is green. If above the range it becomes red. This way you can see if parameters are checking out or not. In the current setup, the answer requires referencing, that can create an error.
Thank you for the video. When you were showing the charts I was confused on how you got your feed rate and chip load. I’m using a cheap 3018 cnc and I’m brand new to this.
Thx.
Yep! When he says hobbyist machine, is a 1.5 HP router a hobbyist machine? LOL I am still confused! But, maybe one day this will all click!
Thank you so much, Just what ive been looking for.
Thank you for this. I really appreciate it 🙂
Great explanation 👍
Thank you for a great explanation
Another great video. Thank you.
The hand and sawdust presentation is a perfect way to explain proper cutting. Haha
Very good content Thank you!
amazing analysis...thank u
Wow that was an amazing video!!!!!!!! I wish I could sit down with you and just talk about this topic. I work for a company as an router operator. I consistently get into discussions about this with upper management. They insist on using 3 flute cutters so we can run faster. Only issue with this is the feed rate for that cutter far exceeds machine capability. Not unless I am figuring things out wrong.
Cuttin' It Close my feed rate max is 1,000 ipm. The maximum feed rate the machine can reach when cutting my parts is 500 ipm due to the short distance it needs to move. I just can’t see spending the money on a 3 flute compression bit when that is overkill for what we are doing. A 2 flute compression bit will be good for the parameters my machine can achieve. Thanks for the insight.
it helped me out now to test lol thank you for your time makeing this video
Thanks for a great video, much appreciated!
Amen. I understand now that playing with the rpm and feed rates as variables you arrive at the recommended average chip load... took a min and serveral beers, but thank you :)
Same here!
Thank you very much, this really helped me out!
I learn a lot from you man:) Thanks you!
Thank you, very
useful for a beginner
Glad it was helpful!
Amazing, saw on many other videos and sources to slow down the cutting for a better finish. Didn't think to go faster! Guess its kind of like flying, better to be moving fast or you stall out!
Great video, thanks for sharing. Being unfamiliar with excel just need to work out how to add formulas to get the required chip loads, speeds and feeds.
Good info. I have a large 48 by 96 CNC but who ever built it thought it was a good idea to but a 400 watt Spindle in it. I run 1/8" bit at little over 1/4" and speed of 72 which seems to work well. My stepper are a little small and are direct drive, not sure i could even get 100 IPM. I will have to do some tests to see what it is capable today.
Been watching your videos and they have helped more than you would imagine. Really like the chip load chart you provided. Do you know if there is one for smaller bits or do you use the same chip load for 1/8? I would think that would be too much for a 1mm or even 1.5mm. If you could help. Thanks.
Great explanation. Thanks for this!
You're very welcome!
Thank you for this information, so freaking cool!
great video. thank you
Omg. That is kind of a norme of your company and you shared it. Thank you.
You are so welcome!
Thank you so much!
Great video,, thanks for making this. !
This is a great video. Very helpful and informative. I recently bought a 30"x30" Longmill MK2. I noticed you set your depth per pass at 1x-2x the diameter of the bit. But I recently saw on Xcarve's recommendations that you should only set your depth per pass at 1/2x the diameter of the bit. Do you think this is just a way to try and keep the rates conservative? And would that potentially heat up the bit more like you said and actually make things worse later on? Thanks again for making this content.
Excellent explanation. Thank you. Finally someone who knows how to explain this. I am using a Openbuilds Workbee with a dewalt router and have had a heck of a time figuring out the feeds and speeds knowing the machine it’s self could never run at the required numbers. Do you have the excel sheet you could share?
Your the man. Thanks!
Thanks. That really helped. I have a Onefinity so 1/4 inch is my biggest except for the one inch surfacing bit. Some speeds seem fast but good to hear it from a pro. 😊
Hows this working out for your Infinity?
@@nomdeguerreinstruments1861 seems to be right on!
Hey ... excellent video ... but a question ... specifically for cutting with a hobbyist level cnc, into hardwood, with a Vcarve bit (2 flutes, 1/4" shaft) ... you mention to use an 80 IPM feed rate, BUT ... what RPM would I set my spindle to? Does it matter if the bit is 60 vs 90 degrees? Do Vcarve bits have a 'diameter' (that could then be used to calculate chip load)? Thanks! Gary
Saved my life, my problem was the dept of cut (was to high)
Thank you Verry mach ! You help me!!!!!!!!
Great job thank you
Tanks for the exel!!! its very very very helpfull, Regards!!
If this is true, I have been going way too slow. Thank you for this chart! I will play around with some feeds and speeds.
Thank you for information
You are welcome
thanks this is really helpful info
Thanks for sharing
ty so much, i just realized that i'm doing almost everything wrong!
Thank you very much
Thanks for this video.
You're welcome
As a total newbe to cncing this explenation and calculator covered everything thank you (any chance of doing it in metric) thank you again
excellent!
Hey this is Saharsh from India. Your videos have really helped me figure out CNC machines and the basics of starting a woodworking company here, specially since this kind of information is not as easily available and you cant always trust machine suppliers.
P.S Anyway and I can reach out to you for queries? If it's not too much of an ask?
Great... I needed this! Great explanation that helped me actually understand! One question about your spreadsheet please. What Spindle horse power does this assume?
@@cutting-it-close Thank you, I understand!
very nice video :)
what about ball nose bits? Use chip load as end mils or slightly less?