How to Design Parts for CNC Machining

Ғылым және технология

I this video, I will go over some of the top tips and tricks on how you can improve your designs and decrease cost while optimizing for manufacturing on a CNC milling process.
I’ll cover everything from fillets, chamfers, setups, drilling, tapping, undercuts and even text. Shortcut links are for everything below. Full article posted on my website below.
00:28 - CNC Milling Machine
01:06 - Common Cutting Tools
01:52 - End Mill Deflection
02:39 - Internal Fillets
03:05 - Fillet Specifics
03:37 - Dogbone Corners
03:45 - Feature Height
04:00 - Threads and Tapping
04:36 - Raw Stock Size
05:01 - Chamfers
05:31 - Setups
06:07 - External Fillets
06:28 - Isolate Tight Tolerance Areas
06:47 - Drilling
07:15 - Bottom Floor Fillets
07:38 - Edge Break Fillets
07:56 - Edge Drilling
08:21 - 3D Surfacing
08:41 - Undercuts
08:58 - Text
09:18 - Bad Example Part
09:47 - Fixing a Bad Part
10:09 - Price Comparison of Good and Bad Part
10:19 - Good Books for Going Further
10:33 - More Links for Learning
Good Books (Affiliate links, your help supports the channel):
- Metalworking, Sink or Swim: amzn.to/2VBHOh4
- Machine Shop Trade Secrets: amzn.to/2YIESBl
CNC Online Quoting:
- www.protolabs.com/
- www.fictiv.com/
- www.xometry.com/
Finding Material:
- www.mcmaster.com/
- www.onlinemetals.com/
Machining Videos:
- / haasautomation
- / saunixcomp
My Website: www.adambender.info/post/desi...
Instagram: / bender_designs

Пікірлер: 121

  • @adrianhood4368
    @adrianhood43685 жыл бұрын

    As a newly graduated mechanical engineer, thanks for teaching what we actually wanted to learn!

  • @gokiburi-chan4255

    @gokiburi-chan4255

    3 жыл бұрын

    This sht was never taught in my school lmao,

  • @JB-dv7ew

    @JB-dv7ew

    2 жыл бұрын

    @@gokiburi-chan4255 Bro nothing was taught at my school. Not how to design for assembly, design for CNC or sheet metal, or detail drawings properly, etc. I can solve quadratic equations and find the Jacobian of a matrix though.

  • @jay89boy

    @jay89boy

    5 ай бұрын

    @@JB-dv7ew too acurate :D

  • @RadicDotkey
    @RadicDotkey3 жыл бұрын

    You don't need to add forced vocal fry to sound pro. In some parts you sound normal and those are way easier on the ears.

  • @47EZ_DRIVER

    @47EZ_DRIVER

    2 жыл бұрын

    yeah Adam should re-record this with his normal voice. I turned on captions because i cannot stand the audio

  • @pvtimberfaller

    @pvtimberfaller

    2 жыл бұрын

    It’s too creepy to listen to.

  • @ZomPaul

    @ZomPaul

    Жыл бұрын

    Rofl I wasn't rdy after the ad stopped and I heard the top comment

  • @ZomPaul

    @ZomPaul

    Жыл бұрын

    Ok I can't watch this..

  • @ZomPaul

    @ZomPaul

    Жыл бұрын

    Fkn Tom waits

  • @shawarebs
    @shawarebs3 жыл бұрын

    As a mechanical Engineer, this is one of the most helpful videos I've ever seen. I'd love for another video similar, but with more advanced topics (flatness, perpendicularity tolerances wrt features done on the same vs multiple setups ... etc). Great content!!

  • @BenTheMagnifice
    @BenTheMagnifice4 жыл бұрын

    Surprisingly great video to find on KZread! Packed with accurate information and no fluff. Please make more!

  • @casemerasheed3875
    @casemerasheed38752 жыл бұрын

    At this point im just going to comment every time I come back to this video, to reassure my self before I submit a design to be fabricated. This is an extremely informative video👍🏾

  • @ChrisTrunek
    @ChrisTrunek4 жыл бұрын

    Watching this ten minute video just helped me save a lot of money. Excellent clear and simple information. Subscribed!

  • @Frrk
    @Frrk5 жыл бұрын

    Absolutely great video man. Very clear to understand. I'll forward this to teachers!

  • @russwizinsky8041
    @russwizinsky80415 жыл бұрын

    What a fantastic video. As a machinist I thank you and will be forwarding it to my design team. Very much appreciated!!!

  • @gokiburi-chan4255

    @gokiburi-chan4255

    3 жыл бұрын

    Trying to learn this so I won’t torture the manufacturing team in the future 😂

  • @StaleCookies
    @StaleCookies3 жыл бұрын

    As someone who is designing milled parts for product design this video is invaluable. Subbed👏

  • @casemerasheed3875
    @casemerasheed38752 жыл бұрын

    Ima a self taught product engineer. Its amazing how many time i come back to this video, when designing parts. It literally answers 90% of what ever design flaws im making.👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾

  • @eviebee4
    @eviebee43 жыл бұрын

    Whoa. Thanks so much for this video. So much useful information delivered clearly and quickly. Cheers!

  • @someotherdude
    @someotherdude7 ай бұрын

    This video is extremely effective and straight to the point. Well done!

  • @robwgeorge
    @robwgeorge5 жыл бұрын

    Fantastic presentation and explanations. Thank you.

  • @captainmurphy4720
    @captainmurphy47206 ай бұрын

    WHAT A TON OF GREAT INFO IN 11 MINUTES. THANK YOU SIR.

  • @brucewilliams6292
    @brucewilliams62923 жыл бұрын

    Really well done! Thanks for the video and Merry Christmas.

  • @ashjo17
    @ashjo172 жыл бұрын

    Wow! such simple and cleared explained concepts.

  • @thomasprice5728
    @thomasprice57284 жыл бұрын

    Fantastic video! I'm a design engineer with a bit of machining experience and this is an incredibly concise, comprehensive and accurate view on designing for milling. I especially liked the deflection graphic and math. Looking forward to seeing more videos my dude

  • @sayfmateen5754
    @sayfmateen57543 жыл бұрын

    Thank you for the info. Waiting for more on turning and fixtures..

  • @steelcannibal
    @steelcannibal Жыл бұрын

    Dude! Fantastic video breakdown! If only more engineers understood this 🥴😵‍💫

  • @dexterc7050
    @dexterc7050 Жыл бұрын

    Very clear and excellent video!

  • @casemerasheed3875
    @casemerasheed38753 жыл бұрын

    Truly Great and informative video 👍🏾👍🏾

  • @ekingorgu
    @ekingorgu2 жыл бұрын

    Adam this is an amazing video. Please make more videos like this. Subscribed.

  • @fake08
    @fake0829 күн бұрын

    such a good, informative video

  • @PettiMusicStudios
    @PettiMusicStudios3 жыл бұрын

    This is a fantastic video. Thank you

  • @free_spirit1
    @free_spirit12 ай бұрын

    Excellent! I wish there was a similar video for designing for turning!

  • @kdprocnc
    @kdprocnc9 ай бұрын

    Tihis really help me a lot,thanks for sharing~

  • @TheeAthis
    @TheeAthis5 жыл бұрын

    Great basic information!

  • @lephtovermeet
    @lephtovermeet4 ай бұрын

    Some good basic advice that I wish was still standard in many engineering degrees. That being said some of this is quite dated. For instance flat bottom holes are extremely common with helical milling, in fact that's the go to for many machinists, albeit the length and depth requirements still apply. Similar critique for thread tapping. It's not super common to use taps on a CNC. There's too many thread types and type styles, plus the break easily. If you're tapping on a mill, you're likely thread milling, which does have diameter requirements, but again is basically the go-to for many of not most machinists. Also chip clearing taps are super common. Also, t-slot cutting and undercutting are again super common, but you do have to work within the limits of your tools and common sense. Also never just put break edge. Someone is just going to hit it with a file after it comes off the mill. I've seen some real disasters. Finally, much of the increased costs when quoting with autoquoters is fairly arbitrary - they charge more because they can and that's what their algos and data have optimized for - especially xometry, they're a huge offender with really unreliable quality. They're actually just a re-sourcer, so you never know what you're going to get. If you are machining in house what drives up cost is having to buy more tools and holders for those tools, and added setups. If your CNC has a tool changer, it's common to leave 2 or 3 slots open to change in specific tools for the job. It usually adds very little extra time or cost to fabricating. But nice vid, thank you.

  • @ajayjb8727
    @ajayjb87274 жыл бұрын

    Great video , really helpfull, Thank you

  • @asheshshrestha
    @asheshshrestha4 жыл бұрын

    It is a really great content. Keep it up!

  • @GMBurov
    @GMBurov6 ай бұрын

    Thank you very much for your advice! 😌

  • 5 жыл бұрын

    Excellent, more! 🙂

  • @enricodesign619
    @enricodesign6193 жыл бұрын

    great video, thank you

  • @swamppifi6186
    @swamppifi61863 жыл бұрын

    I work as a CNC programmer and the amount of times I get a cad models that people poorly design, and then expect to be able to machine , is just mind blowing. I often have to go back and make some suggestion on how to change the design to allow for easier machine. Thank you for this video...

  • @JB-dv7ew

    @JB-dv7ew

    2 жыл бұрын

    Yup and you'll keep having to do it because engineering schools don't teach this shit and I have no idea why. It's the reason why I'm here as a mech engineer.

  • @JayP0205

    @JayP0205

    2 жыл бұрын

    I’m one of those fools and got zero quotes back because of a design that even a 5 axis couldn’t build lol. This video saved me a ton of unanswered questions

  • @wangqiaozhang4827
    @wangqiaozhang48273 жыл бұрын

    wow, really helpful!

  • @LibertyWarrior68
    @LibertyWarrior68 Жыл бұрын

    This is good information.

  • @user-yd6cd8hh9h
    @user-yd6cd8hh9h3 жыл бұрын

    It is even easy to understand for me, even though I am not a machinist,I am just a project manager who are working for promoting the cnc machining services in China.

  • @tri5431
    @tri54318 ай бұрын

    Very helpful video, thank you ! You're saving a lot of headaches for many machinists out there. The only comment I have would be the extreme vocal fry. My Bose speakers don't have a bass/treble adjustment, so it's very difficult to make out the speech.

  • @easylivinglife6284
    @easylivinglife62846 ай бұрын

    As a logistics manager, I appreciate you adding the stock size to part size comment... however, I often find that CNC programmers have a unique mind, and may prefer to use larger or smaller stock if it means holding a fixture a certain way, making more than one part pert blank, or decreasing machining cycle time. For example, say you have a part thats 2'' thic by 2'' wide. A programmer may request a blank thats 4.5'' thick by 2'' wide, cut into blanks for length and machine two parts from said blank. While technically increasing cycle time, it actually reduces it the total time per part- less time loading and unloading the fixture, and less time cutting the material. And think about it, would you rather have 200 12foot bars strew about because you have to mass manufacture some small dinky part? No! You want a few decently sized bars that the CNC program can make the most use out of.

  • @sreerajpanayancheril7206
    @sreerajpanayancheril72065 жыл бұрын

    great video

  • @Unl0gic
    @Unl0gic3 ай бұрын

    Thanks for a very informative video without any "Cool KZreadr nonsense"

  • @abhiadsul6538
    @abhiadsul65385 жыл бұрын

    Very informative

  • @iamthebiker
    @iamthebiker2 жыл бұрын

    Great video

  • @angelalexandrov2831
    @angelalexandrov28315 жыл бұрын

    Great video - thanks! If you make something similar for lathe parts it will be very useful.

  • @AdamBender

    @AdamBender

    5 жыл бұрын

    Good suggestion! I will add it to my list

  • @m.berger2370
    @m.berger2370Ай бұрын

    Thank you !

  • @zaccomusic
    @zaccomusic3 жыл бұрын

    nice contents I hope you keep update :)

  • @donfite2081
    @donfite20815 жыл бұрын

    BRAVO!!!

  • @user-ly5ri6yw9g
    @user-ly5ri6yw9g11 ай бұрын

    Hi Adam, Thank you for the videos, it helps me a lots. I have a question. In case of internal fillet, is it harder if we machine an internal chamfer instead?

  • @ambroseliu6207
    @ambroseliu6207Ай бұрын

    Very helpful to mechanical engineer

  • @nbsjdiyhd
    @nbsjdiyhd2 жыл бұрын

    Thanks bro

  • @coralsign
    @coralsign4 жыл бұрын

    great !

  • @bhekidlamini51
    @bhekidlamini51 Жыл бұрын

    Do you have pdf content of this video. Excellent!

  • @pentikimahougami8348
    @pentikimahougami83485 жыл бұрын

    Speedymetals is also pretty good about price/selection.

  • @martinjensen4714
    @martinjensen47143 жыл бұрын

    Are these "design rules" covered in the mentioned books? If so, I guess they are a must read for any engineers like myself!

  • @pentikimahougami8348
    @pentikimahougami83485 жыл бұрын

    2:10 For pedants, the words diameter and length are switched for this timestamp.

  • @ashkancncpart8083
    @ashkancncpart80833 жыл бұрын

    Sehr gut

  • @james2749
    @james2749Ай бұрын

    What about machining draft angles for moulds? are there bits for that?

  • @jesseskellington9427
    @jesseskellington942716 күн бұрын

    On a CnC milling machine Do you have a video on how you can take square stock and turn into brown stock? I find a lot about ladies doing this but not on a mill. I have 1 in by 1 in square stock that and what one in 1 in down round... Do you have a video on this operation? :-)

  • @AaronHarlow
    @AaronHarlow5 жыл бұрын

    Great info! I had a hard time hearing you though, perhaps its your microphone.

  • @MrKillermeatball
    @MrKillermeatball4 жыл бұрын

    About to give a presentation on this, was watching videos to see if I'd forgotten anything in my notes... INTERNAL FILLETS SUCK! XD

  • @grateful4068
    @grateful40685 жыл бұрын

    found this via Hackaday. Subscribed because of this video. Great work.

  • @AdamBender

    @AdamBender

    5 жыл бұрын

    Thanks!

  • @ranjah76

    @ranjah76

    5 жыл бұрын

    Me too!

  • @BlackSmokeDMax
    @BlackSmokeDMax3 жыл бұрын

    Those top fillets aren't too terrible if necessary... As long as you pick a radius that is a standard cutter size. Search "corner rounding end mills", and usually the smaller you can live with, the better!

  • @drew79s
    @drew79s5 жыл бұрын

    Good stuff... The floor radius information isn't exactly right though. Using a small floor radius can work really well if you're using a radius endmill, as a 10-12mm endmill will have about a 1mm corner radius, this means that you can go for a fine floor radius with a wide vertical corner radius. Additionally, the undercut feature you've drawn isn't possible to machine, but there are t slot cutters and dove tail that do a nice job of particular feature types, so as long as you're standardising on those feature types undercut isn't a problem at all.

  • @AdamBender

    @AdamBender

    5 жыл бұрын

    Good feedback Drew! Yeah bull nose end mills with small corner radius can be great for harder to machine materials like stainless, or lowering stress concentration. Agreed on my undercut drawing, I got a bit lazy with that one, but I was hoping it would get the idea across. T slots and dovetails are two exceptions for undercutting when done correctly. Thanks for the input and watching the video!

  • @foxzerox1000
    @foxzerox10002 ай бұрын

    At one point you say to always add fillets to the exterior, but then say to never have fillets on the top part instead gave a champher but if they are going on the out side anyway wouldn't thst make any given side the "top" for that operation? Like how do I know which to use?

  • @chrischalabi
    @chrischalabi5 жыл бұрын

    Great stuff, but definitely try to avoid the monotone. Also you should rename this video to CNC Milling and also make a video for turned parts.

  • @AdamBender

    @AdamBender

    5 жыл бұрын

    Thanks for the feedback, I'll definitely work on the voiceover in future videos. Lathe video is on the list!!

  • @financialchimes4546
    @financialchimes45462 жыл бұрын

    @6:29 I've heard you should avoid bosses because it's more cost-efficient to mill a surface flat than to mill several different small bosses within the same flatness as the edges on the bosses leads to reduced tool life. @7:15 I've been taught that fillets at the floor of a pocket can reduce costs if you use the same radius as standard corner radius end mills because the sharp edge on flat end mills breaks and wears a lot easier. What are your thoughts on this?

  • @typhoys

    @typhoys

    2 жыл бұрын

    From my experience it is true that bosses are expensive but it is easier and cheaper to achieve flatness for a smaller area

  • @EricBrummer

    @EricBrummer

    Жыл бұрын

    If the bottom of your pocket has no impact to your design, you can always call out in the drawing something like "R0.5 MAX, sharp corner allowed." Then the machinist can choose based on what they have and what they think is easiest. On some materials, using a bull nose end mill can be a major tool life saver. As for bosses and flatness you can really get in the weeds on details. Size and thickness of a part matter a lot. Holding flatness in 2 small spots on either end of or across the whole surface of a partrhats 4ft long is going to be difficult. Same thing with thin stuff that is being warped clamped in the vise. Also depending on the amount of material removal the part will change shape as you relieve stress in the material and/or reduce the rigidity by making it thinner while clapped. If the part is smaller, like a fits within the visse, then you can rely on the accuracy of the machine heavily and get a decent flat surface especially if using a fly cutter to cut with a single point. Having discontinuous cuts (tooth cutting then not touching then cutting) is bad for tool life especially carbide but with the bosses shown you might not even have that issue. Face the whole thing first, then relieve around the feet. Although on a small part there's probably no reason to have feet. Much larger stuff the feet help although for anything requiring really tight flatness I'm probably existing grinding anyways in which case I don't think the feet have a major negative impact (and save time on grinding) but I'm far less knowledgeable on grinding.

  • @kyeeralamala7567
    @kyeeralamala75674 ай бұрын

    omg thank you bb

  • @AlojzyZyrokompas
    @AlojzyZyrokompas3 жыл бұрын

    What's with the shy growling? Otherwise pretty informative. I wouldn't agree with R being 3 times smaller than H though, in most cases You can successfully make it 6 times smaller without compromising milling precision.

  • @kateiry4719
    @kateiry47192 жыл бұрын

    The crispy deep fry voice is too distracting 😂

  • @pravinrathod7781
    @pravinrathod77813 жыл бұрын

    Asentrik work ka video banaeye

  • @JB-dv7ew
    @JB-dv7ew2 жыл бұрын

    Anyone got any tips for me on how to get into designing parts for CNC machines and doing a little FEA? I currently design sheet metal parts that are static and never loaded, it's boring as shit and requires no engineering.

  • @mouhaahaahaa
    @mouhaahaahaa2 жыл бұрын

    nice video but are you an extremly heavy smoker or something

  • @EYes-zy6my
    @EYes-zy6my Жыл бұрын

    Good info…Wish your “NU VOIS” didn’t run out of batteries… 😬 Seriously!

  • @mantimanufacturing9770
    @mantimanufacturing97703 жыл бұрын

    Mandatory for all engineers lol

  • @TimDonk
    @TimDonk4 жыл бұрын

    Vocal Fry!!

  • @AlJay0032
    @AlJay00325 жыл бұрын

    Seems you got your axis wrong. CNC mills don't use left handed coordinate systems.

  • @AdamBender

    @AdamBender

    5 жыл бұрын

    Good catch! looks my labelling got flipped

  • @AlJay0032

    @AlJay0032

    5 жыл бұрын

    @@AdamBender Thanks for this great educational video.

  • @jnewbon00
    @jnewbon002 жыл бұрын

    awsome vid, had to mute and use CC.

  • @TimDonk
    @TimDonk4 жыл бұрын

    Zed axis? I didn't notice an Aussie accent.

  • @AdamBender

    @AdamBender

    4 жыл бұрын

    Canadian!

  • @jordanp8003
    @jordanp80034 жыл бұрын

    Great video, but...ribbit lol.

  • @guessagainkk6322
    @guessagainkk63228 ай бұрын

    If you are a Design Engineer "don't be that idiot" who like sending "over the wall" drawings without checking with your machinist first. If not they may kindly turn you down as a design / fabricator relation, then you are screwed. This is beginner video 101 for all wanna be "design engineers" for machined parts.

  • @n4ko
    @n4ko4 жыл бұрын

    this was a very good video, thx u. but pls stop smoking. its not good for your health =(

  • @VitaminDeth
    @VitaminDeth3 ай бұрын

    Very informative video but the guy sounds like he needs a cough drop

  • @majorchungus
    @majorchungus29 күн бұрын

    Zed. Lol.

  • @emmie_7
    @emmie_79 ай бұрын

    This video just gives alot of reasons why CNC machining should be avoided in general lol

  • @ivanvazquez7465
    @ivanvazquez74658 күн бұрын

    Damn,vthis video is helpful, but the voice is a pain

  • @Metalbrix01
    @Metalbrix013 жыл бұрын

    Your voice is very rough

  • @patkcorcoran
    @patkcorcoran4 жыл бұрын

    Henry Kissinger voice, hard to listen to.

  • @paullamb7697
    @paullamb76975 жыл бұрын

    sorry i cant listen to your voice

  • @leonidassavalas745
    @leonidassavalas7453 жыл бұрын

    Interesting topic but that voice...it's like someone dragging a rock. Can't stand to listen. I hope it's not throat cancer or some other illness. Hopefully, it's just laziness.

  • @SinaRa-yj1xo
    @SinaRa-yj1xo4 ай бұрын

    Bruh, what the f is going on with your voice

  • @zeljkanenad
    @zeljkanenad4 жыл бұрын

    Why forcing this irritating voice? At times you forgot to force it, it sounds pleasant. Good content, though.

  • @superkas
    @superkas3 жыл бұрын

    Maybe you can fix your throat with cough medicine, it's kinda hard to listen since you are not teenager anymore.

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