Down Bits (Down Cut) And CNC Routers [What You Didn't Know] - Garrett Fromme
Вставка
- Опубліковано 15 бер 2021
- When it comes to CNC router bits, the down bit is the workhorse. However, most do not understand how to best use it. This video explains what a down bit is for CNC routers and how to use them. Knowing this will help you immensely improve your CNC project outcomes. When you are having surface finish problems around letters and such in your pocket tool paths, it is almost always because of the down-cut bit and how it is used and programmed.
The down bit is very different from the up bit because of the forces that is applied by the spiral of the theflutes.
For better CNC router projects where a downcut router bit is used, you will have a completely new understanding of downbits.
New to CNC routers? Learn more about a 2-hour course to get you acquainted with them. Click here now: idcwoodcraft.com/product/cnc-...
#downbits #downcutrouterbits #cncrouterbits #cnc #cncrouters
FREE Feeds & Speeds table: bit.ly/3fxYeUF
CNC FOR BEGINNERS playlist: bit.ly/3rg4WTl
CNC ENTREPRENEURS playlist: bit.ly/3mxz6Ok
VCARVE FOR BEGINNERS playlist: bit.ly/3pdmFsi
SCHEDULE ONE-ON-ONE: calendly.com/garrettfromme/60...
ROUTER BITS FOR CNC ROUTERS
→ 8-pc carbide CNC router bit set (w/ free vector files) bit.ly/3d1iQnF
→ 1” Surfacing bit required for surfacing your spoil board: idcwoodcraft.com/product/surf...
Use this discount code (SURFACING BIT)
→ Glass engraving drag bit: bit.ly/3tRy98s
OTHER ‘MUST HAVES’
→ Calipers: link.idcwoodcraft.com/z6dvci
→ Hearing protection (plugs don't work): amzn.to/2Hs1RgW
If you currently own a CNC router, please take a moment to take this survey to share your experience with it: bit.ly/3r5XzNh
Cool vector files for CNC router & CNC laser: etsy.me/3oxX79l Learn how to start an online business from scratch: bit.ly/2ZUEIKK
Words are the top-selling items of all time with CNC products. Get the free WORDS THAT SELL list: idcwoodcraft.com/cnc-lp-1/
NEED A WEBSITE?
An ecom website prebuilt for CNC’ers, built in 3 days, for $200. Mention ‘IDC Woodcraft’ to get 10% off: insightsmarketing.net/cnc-pro/
CNC For Beginners Podcast: anchor.fm/cnc-for-beginners
CNC Insiders sign up (free files and more): idcwoodcraft.com/cnc-lp2-free...
OTHER WAYS TO SUPPORT THIS CHANNEL
→ LIKE the video
→ COMMENT about the video
→ DONATE: www.paypal.me/garrettfromme
→ PURCHASE through links I provide in these descriptions. I receive affiliate commissions and the cost is the same to you.
Facebook: IDCWoodcraft
Website: www.idcwoodcraft.com
Email: support@idcwoodcraft.com
#downbits #cncrouterbits #cnc #cncrouters
I’ve needed to see this video 10 years ago. So much time not sanding I’ll save now!
EpicPovAction, I'm glad you found the video helpful! Sanding is one of those tasks that can make a big difference in the final outcome of your project. Happy woodworking!
*psshhhtt* "This is your captain speaking, I'm going to guide you through the basics of CNC routing. We should have a nice flight and teach you to use your CNC router while enroute to our destination" *psshhtt*
Great video, time for a new mic for the narrative bits.
Awesomesuace, thank you brother! Glad you liked this one.
Another thing i did not know "set last pass" thin for the clean finish far better than sanding thanks once again
Peter, its the best time saving trick isn't it? I don't think i've ever met anyone that enjoys sanding!
I’ve been running a cnc for over 20 years and I am very impressed with your content! Love the downcut information! Just ordered a few new downs! Thanks again
Wraps Signs and Graphics, awesome thank you! I'm sorry for the delayed response, it's been a busy week working on getting out some new content this week!
I am a beginning woodworker and don’t own a CNC, but I do have a couple of routers. I had no idea how much difference the up & down cut bits cut the wood! I think you have shown me the reason for my messy cuts! Unfortunately I don’t have any down cut bits so I have to wait until tomorrow to use them!! Thanks so very much for your very excellent & detailed video!!
dennisdoi8572, you are so welcome my friend. Happy CNCing.
I’m at cero knowledge of working with wood especially a cnc however lately it caught my attention and I found your videos and I got to say that now I want to start my own business this profession seems so interested and fun so thank you for it
yefrinabrego8360, first off I want to officially welcome you to the amazing world of cncing and to the channel! I'm glad to be a part of your cnc journey and hopefully make things a little easier along the way! Happy cncing!
Hi I have been driving myself nuts about this!!Thank you. Gerry Smith
Hi Gerry. I'm so glad I gad the answer. Did the project come out right that you were working on?
your information is spot on as always Garrett you explain things in a way that even I can understand everything you say!!! I am a brand new future CNC student and loving it!! Thank you for helping understand how everything works together.
lippa618papalee4, you are so welcome my friend. Happy CNCing.
I never would have believed that the router bit could climb up like that. Thank you for educating me.
Hey Don. It's one of those things learned after many years of experience.
Us Newbies really appreciate tips like this Garrett. Keep them coming thanks
Hey Dan. I am happy to hear this. I will keep them coming for you, my friend!!
Just made another bit order from you while learning more about Vectric. I never noticed the edit passes option. Thanks for another great tutorial
Hi Craig. Your bit is on its way! There are so many little tools in vectric, it's hard to catch them all at once.
Wow, there was a time when all of this seemed a mystery to me. However, since watching your videos, you have taken the mystery out of cncing. Thank you so much for all your help
What to set up a one on one. How do I do that and what is the cost?
DavidPinson, congrats and welcome to the wonderful world of CNC brother!
David, I am sorry brother but I have not had time to do one-on-ones lately. You can set one up with a sister CNCer Kate, here is the link: idcwoodcraft.com/pages/cnc-router-one-on-one-help
Good video, I'm taking my first steps in the world of CNC and this is grate information to me with almost no experience. THANKS
You are so welcome brother! Happy CNCing.
Convinced me to start using the finish pass option. Thank you!
Hey Hamlin. It'll save you a but load of time
Garrett, The addition of the last "clean-up" pass feeds my OCD to new levels. It is what gives the project a quality appearance and would heighten the actual value of that project. Thankew ! - - - GR 13 Aug '21
Hey Guy. You are so right. The finish makes so much difference and by doing a finish pass, it gives it a much better look.
Discovering why my upcut cuts deeper than I thought. Down cut and finishing pass makes lots of sense.
Always Censored, glad this video helped you brother. Its amazing how much a small change to a bit can make such a big difference isnt it?
I just finished a sign for my cousin for a wedding present. I had a lot of sanding that I did to make it flat. I wished I would of watch this before I started I could of saved a lot of time, thank you.
Paul, sorry this one didn't quite find you in time for the sign! Hopefully it will come in handy on the next one though brother! Happy cutting!
Following your channel as Im just looking into buying a cnc router, so bagging as much information as i can 👍
Great channel with good information thanks 👍
Hi Gaz. Thank you for complimenting. And welcome aboard!
Thank you for this! I've been racking my brain trying to figure out what causes these lines and how to fix them.
Jason, no problem brother. I'm happy to help!
Great job I can't wait to get my CNC
thank you for all your assistance.
Ruben, you're so welcome brother! I can't wait for you to get your cnc either!
I am new to the CNC. I purchased my cnc about a year and half ago. I have had no one personally to show me anything about cnc work, so I have been watching youtube videos such as these to learn how to get better. Thanks for the great information!! The aha moment for me is when you explained the mechanics of the up cut and down cut bits. I have been struggling for a while with clean up on my projects, which can take alot of time depending on the size of the project. This video has been very informative and thanks for taking the time to put it on youtube. Looking forward to watching other videos.
Daniel, I know that overwhelming feeling trying to figure everything out on your own! I'm glad you found the channel, we have an awesome community of CNC brothers and sisters here to lean on for support. I live for those aha moments, thanks for sharing.Hopefully cleaning up your projects won't be such a hassle from now on! Keep up the good work!
Thanks Garret, another good one!! I have noticed what you are showing and never knew there was a fix for that. I also have a question for you. I fall my own trees and have a friend with a Woodmizer saw mill who mills my logs for me. One of my favorite woods for simple not for show projects is Spruce. We can fall trees up to twenty four inches diameter with a wood cutting permit and in some areas even bigger. What I like most about it is that the bottom sections of the trees are almost knot free. I makes really nice clear lumber. And the best part is that it's free. Don't know if you have ever used it but I can tell you this, it is very, very strigy. In this video where you show the difference between the cuts of the up and down cut bits, you can see the top edge of the board where you used the upcut bit is a little rough. That same test on Spruce would leave one to two inch long fibers through the entire cut. So I have been thinking I could use a downcut end mill and set the toolpath to about 1/16" deep and go around the entire project at that depth, then change the bit to an upcut to accommodate the fact that the cut is going to 1/2 or more deep. That way I would have a clean crisp top cut, with no sanding, and a more even bottom cut. What do you think? Would like to hear your thoughts on this. Thanks again Garrett for all the videos.
Jim Scott
Hey Jim, great question! Your thought process is sound and I think this could work really well for you. I haven't done a lot of projects using spruce so I'm not super familiar wit the way it tends to cut. I'd say best method is trial and error on tis one. Worst case is you might need some sanding at the very end! Let me know how this turns out, I'd love to hear!
I’m a beginner and I just learned from you a a bit of knowledge that I probably wouldn’t have never learned. Thank you 😊
Check it first, you are so welcome my friend.
I'm new to this CNC routing.
Hi Xray. Stick around and you'll be a seasoned veteran in no time!
I make two pocket passes. One rough cuts stepped down and undersize. Finish pass is full depth of cut rater - perfect sides and bottom.
Hi Peter. You figured out the exact right way to do it!
Once again a awesome tutorial .
Charlie, that's good to hear brother! I'm glad you enjoyed it.
Absolutely brilliant explanation of what is going on. This video should come in a little box with every CNC router. Well done Garrett!
RattlecanGuitarRestorations, you are so welcome brother.
Good Stuff! I am a beginner and this turned on the light 💡
Hey Carlos. I'm glad. It will make your CNC life much easier, for sure.
Thank you for this advisory "trick". I think you're right as well. The people who find this out early on will have greater success on their projects, therefore, increasing their excitement and desire to create more. Well done Garrett!
Hey Jason. Yes, I hope every single CNC'er gets to this video for that very reason. I think this is the most frustrating thing people come across when they start CNC'ing.
Running a second pass makes all the sense in the world ! Then you showed the machine in action ! Final results awesome !😎😎🤙🤙👌👌
Cjtoledor, glad to hear that you had your "aha" moment with the second pass. And you are totally right, the machine in action with the final results make for an awesome finished project.
Very good information. I am going to add this video to my go to tips. Ah Ha, the finished product.
Hi Randy. A finished product with a good finish!
Machining engineer here and just want to say awesome information. I deal with aluminum all day and going through your videos I'm learning TONS especially the difference in bits I need for my own personal router. Thanks so much. Your videos are exactly what I was looking for. Don't take these with a grain of salt all.
Hi Devin. Thank you. With this comment, I will definitely keep making videos. Mechanical engineer, huh. A brother in the engineering industry…manufacturing process engineer in my day.
Great info, Garrett. I've been doing something similar by using a pair of toolpaths, a roughing pass and a finishing pass, for the paths where this is needed/relevant. The roughing pass will typically stop 0.01 above the final depth. The finishing pass will take care of the final 0.01, as well as have a smaller stepover and a higher feed rate. For instance, the roughing pass might have a 0.1 DOC, a 25% stepover and a feed of 60 IPM. The finishing pass will be 0.01 DOC, 10% stepover and feed rate of 100 IPM. Yes, it takes longer, but still shorter time than cleaning up without the finishing pass.
Excellent. You've got it figured out! It usually takes a painful journey of sanding and realising it is much more worth letting the machine spend extra time at it.
I've been CNC routing for a few years. No one explained this problem until now. Many thanks!
Saighusa, you are so welcome my friend.
I don't even have my CNC yet, but I can already tell that THIS IS AWESOME INFO HERE! I'm sure this will come up, and now I have a head start on being able to address it--maybe even before it happens! Thanks!
(From a fellow Jeep guy!)
Kevin, you will know what to do to almost stop this from happening completely now!
Wow, thank you for producing this video because I ruin 3 attempts at making a house warming gift for a friend because it left obvious level differences. I will certainly give this step a try!
Dawayne, that can be frustrating for sure. Hopefully it turns out perfect this time!
Wow, this was great information that i will be trying. This will save sanding time.....
Hi Dexter. It will definitely save you time. I'd rather my machine run longer than me have to sand. Don't you agree?
WOW!! I've had this problem for almost two years now. I didn't know what a final pass was or how to do it. You never seem to impress me with your videos , this one if from two years ago and I am just now seeing it. A couple of cups of coffee is coming your way my friend,
BHWoodcrafters, right on brother! So happy to hear this one helped you.
Wow.... mind blown....I never thought about the pressure from the sides etc. I always thought it was the wood flexing.
anthonywindle, glad to hear this one cleared some things up for you brother!
Never ran a cnc but do have a mini mill and yes always account for a thin clean up pass to bring it to your dimensions
Dale, true that brother! Always a good idea to bring it up to the dimensions you are looking for.
Hi just joined. This proves to me that what some (so called experts/experienced users) give advice on any particular problem often is a load of ____. I will soon be buying my first cnc (at long last) so now I will be starting out with, at least some good knowledge, and not fed a load of BS by people who don't know anything about it all. Thanks and please keep them coming!
Hi Chris. Sorry for the delay in responding. I appreciate what you shared and I hope the videos I create for you and other CNC'ers will help you immensely!
It makes sense. Being more green then grass. I’ll just trust in the info. I’ve been following your videos. Just installed my vcarve pro. It will take me a little but I’ll get it. I have to, I have a great teacher.
sfg18b, I'm happy to help brother! You got this!
Great video. After 40 years in machine work this wood stuff is a little different.
Hi Richard. Yes, it definitely is. I had to relearn many things as well.
I'm new to CNC (haven't bought mine just yet) and just discovered your videos and I'm so happy I did! Even though I have done some reading into it, so many of your videos have given me so much more. Subscribed!
1powelrainbow, welcome to the wonderful world of CNC. Happy to have you here.
Thanks so much for that bit of information, this actually happened to me yesterday. Excited for tomorrow.... the tool set I ordered from you will be coming in, can't wait to put them to work. Thanks for all the great videos.
Cobyvincenr, you are so welcome my friend! I am excited for you to get your bits.
Great video, Garrett!
While watching the video, I was thinking of making a final, thin pass with an upcut bit. Never thought of using vCarve to solve the problem with a final pass. That's the reason why I watch all of your videos.
Thanks so much for your help.
Stan
Stan, you are so welcome brother! Happy to hear this video helped.
Thanks, the tiny final pass will help me greatly! I've spent hours cleaning the bottom of pocket areas to meet my standards.
Jim, that is great to hear my friend. Makes your life a whole lot easier doesn't it?
This video is worth its weight in gold!! Thank you!!
Hello Darwin! Thank you and you are totally welcome!!!
Makers so much sense!!! Thanks for the videos!
Hello my friend! It is one of thoise things, isn't it?
If you software supports it, Inner corner feed rate reduction will do wonders as well. Use the stubbiest endmill possible. I plow everything away with a 90% step over with a stubby 3/8 or 1/2 with a light chip load to reduce large tearout. All the same concepts apply with metal as well except the metal doesn't rip out chunks from the tool pressure
Brian, Great info, thanks for sharing brother.
Great advice thank you! You're on the ball!
Hi Grant. Thank you. It's one of those things, ya' know...
I enjoyed the video and it had good information. A small negative was that I'd prefer less discussion. Some was repetition and I have to admit, I do have a short attention span. Overall, a good video and great explanation of the issue and how to fix it.
Hi Harold. I do repeat myself. I'll work on it. Thanks for pointing that out, and for the compliment.
I always thought you would make the first pass with the Down Bit, then switch to up for the end. But this makes perfect sense. As always, Great video.
Hi Greg. I didn't switch up, because I didn't need to. Although, it's not a bad idea if you want to take the extra step.
lightbulb moment...so obvious when explained so well.....keep up good work
Thanks Jason!!
Great job, thanks for sharing!!!
Sarah, you are welcome :)
Thank you very much for this very instructive video. greetings from Puerto Rico. Thank you.
You are welcome JWV!
Brillant Garrett so simple yet smart, you helped in my research into buying a cnc machine here in the Uk thanks i have subbed you too :)
Hi Kevin. Welcome to the community! So, what CNC are you getting?
Aha! Very informational. Thanks!
Hello Christian. Thank you. hope it solves some issues you might be having.
Very clear explanation
Hi Bill. Thank you. What kind of projects do you make on your CNC?
I learn so much from these videos, I can’t thank you enough.
Steve, glad to help my friend!
Excellent explanation
Alan, glad to help!
great info and looking forward to watching more!
Hi Hason. Thank you. My friend, there are plenty on this channel for you and more coming!
Another great video Garrett
Thanks Matt!
Really great info thanks
Leon, you are so welcome brother.
Thank you for your info! I greatly appreciate your help!
You got it brother. More to come...
Great information !
MyCowboyWays, glad you liked this one brother!
So informative! Thanks!!!
Hi Bev. thank you and you're welcome. What type of projects are you venturing into?
Perfect information, thank you Sir!
mchtzn, no problem brother I'm happy to help!
Really wonderfully helpful info. Thank you
DavidStokely, you are so welcome my friend!
Wonderful stuff for the Infant Beginner Garrett. Keep on Keepen on! Have a Great Day.
Hey Lenny. As long as the beginner sticks to this channel, they won't stay a beginner for very long!
this video helped me understand the difference between up and down - big thanks
Hi Stuart. You are very welcome!!
Thank you for that. I’m sure it will save me a lot of time in frustration.
jrz931, glad to help my friend! Happy cutting!
Again thank you Sir
Paul, no problem brother! Glad to help
Very helpful, thank you.
Hi Bruce. You're welcome!!
Thanks for sharing this tip . It really does give a nice clean finish
you're welcome Dennis. You'll be happy you took the extra time on the finish cut for sure.
thanks sure saves a lot of sanding
You are so right, Bruce! Yes it does!
Thanks for the link this helped on some of the issues we discussed..
Scott, glad to hear this one helped you brother!
Very nice video thank you
Hi Gary. Thank you.
Thank you for this video, every second of it was very informative.
You're welcome Vealeal
Great video and explanation. You my friend have helped me get a much better understanding of CNC related stuff. Your enthusiasm shows through in your videos and makes them a pleasure to watch.
Hi Randito. Thank you so much for sharing that. Yes, definitely enthusiastic. Even more important...you have gotten much better at your designing and projects...the ultimate goal.
Very useful, thanks.
Dave, no problem brother! I'm glad it was helpful!
Great video.
Thanks Samuel
NICE! Thanks a lot. Always looking for ways to improve 👍
Hi Darrel. Thank you. Yup...when we stop improving, life gets a little boring
Great training Garrett. I saw this stair stepping but didn’t know what caused it so thank you.
Hi Matt. You are welcome. It's one of those things that eludes us until we really look at the mechanics behind it.
Thanks for helping me with the stopover. I already learned about the separate last pass and it made a huge difference in my bottom cuts. But understanding the step over is now better in my head. Good job!
CK
Excellent. Glad it took you up a nothc. What are you working on right now?
great job , very helpful
Thanks Mike!!
Great info !! Thank you.
Hi Jay. Thank you and you're welcome :)
Im trying to learn as much as I can before my machine arrives. I like the videos, very informative.
Hi Anthony. I can't wait for your machine to arrive. Thank you for the reinforcement of this channel
Thank you for the great information, my High School Tech Design class thoroughly enjoyed your video. You did a great job explaining the differences.
Hi Gary. What an honor to be shared in a class! Thank you for letting me know and tell the class 'hello!'
dude, to put this simply, your are amazing.Thank you
Esmir, glad this video helped you brother!
Thankyou very much.
Hi Timothy. you are very welcome.
great explanation
Thanks Doug
Great video leaned allot will keep watching your vids. Thanks
Hi Rick. Welcome to the community! And for you, I will keep making those videos.
Excellent!!
GralinGmouton, so glad this one helped you brother.
Great info and very informative, love your videos
Jer, thank you brother. Glad you liked this one.
Yeah this was something i didnt think about but it makes sense
Brian, glad it was helpful brother!
This is a VERY useful video. I believe it actually saves me time because it omits having to sand all the little burs and ridges off. Thank you so much for the top tip!
Hi Carl. You got it, brother! It's an obvious trade off. Let the router run a bit longer to avoid snading. I'm game!
Real nice info to know
sfg18b, glad it was helpful my friend!
Great video. So much great information. I will always adapt strategies to make my work better.
Hi Carmine! Thank you. I'm one of those that when I have a problem, I drill in to solve it. Then it's time to share for people like you.
When I first started down the dark road of CNC routers. I had the same problems, but what I DID observe was the lack of my machine's rigidity. Anything you can do to beef up your machine will minimize witness marks. You'd be surprised at what some light weight aluminum angle can do for a machine's rigidity. You won't eliminate the witness marks entirely , so Garrett's solution is the one to go with!
Hi Greg. Thank you for contributing here. I always enjoy it when other CNC'ers add to things I miss.
this comment 100% i typically work with 2000 lb steel milling machines (bridgeport) that have zero rigidity issues- i was unpleasantly surprised while unpacking my next wave desktop cnc to find it was built with a plastic frame and aluminum top- the whole thing flexes under stress. I've already begun to contimplate rebuilding the entire cnc with aluminum!