Down Bits (Down Cut) And CNC Routers [What You Didn't Know] - Garrett Fromme
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- เผยแพร่เมื่อ 15 มี.ค. 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.
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#downbits #cncrouterbits #cnc #cncrouters
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.
Well said. That last pass may take some time, but it is worth it.
Hi Lloyd. Just turn up the feed rate for the last pass.
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!
AHA!!!! I had actually stopped doing some lettering due to marks and uneven levels that I got. Now I can do them knowing that I will get a great, smooth result and finish. Thanks for all your great advice and information.
Bob, right on brother! Glad to hear this video set you on the right track.
dude, to put this simply, your are amazing.Thank you
Esmir, glad this video helped you brother!
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!
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?
Thanks Don't have a CNC yet like your videos
Hi David. That you're watching these...I think you'll have one sooner than you think.
Convinced me to start using the finish pass option. Thank you!
Hey Hamlin. It'll save you a but load of time
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.
*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.
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.
So two Aha! moments on this video....I've had my digital calipers for 5 years now. I mostly used them for pen turning. I ashamed to admit that I never knew you could use the calipers to measure the depth by using the other end. I was just compiling to my husband yesterday that I wish I had an accurate way of measuring the depth of something. Palm plant to my face... DUH. 2nd, while I understood the difference between the upcut and downcut bits...I didn't realize why the downcut bit leaves a burr mark. Now I know. Thanks Garrett.
Martha. Never be embarassed. We only know what we know...until someone shows us!
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
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!
Great information, can't wait until I get your bits and have a one-on one with you. I have all my questions ready--thanks
Hi Mike. Your bits are on the way! I look forward to helping you.
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.
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.
Once again a awesome tutorial .
Charlie, that's good to hear brother! I'm glad you enjoyed it.
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.
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!
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!!
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.
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.
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!
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?
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!
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've been CNC routing for a few years. No one explained this problem until now. Many thanks!
Saighusa, you are so welcome my friend.
Thank you for this video, every second of it was very informative.
You're welcome Vealeal
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!
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!
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.
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!
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.
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.
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?
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!
Thank you very much for this very instructive video. greetings from Puerto Rico. Thank you.
You are welcome JWV!
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.
Thanks for the link this helped on some of the issues we discussed..
Scott, glad to hear this one helped you brother!
lightbulb moment...so obvious when explained so well.....keep up good work
Thanks Jason!!
Great advice thank you! You're on the ball!
Hi Grant. Thank you. It's one of those things, ya' know...
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.
Makers so much sense!!! Thanks for the videos!
Hello my friend! It is one of thoise things, isn't it?
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.
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!
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!
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?
Excellent, excellent video. I learned a ton with this video - really appreciate the great info. It's still early days for me with my CNC so this is invaluable information!
Robert, you have no idea how valuable it is until you have to sand a project twice as long as it took to make it. But you won't have to experience that now, thank goodness!
@@IDCWoodcraft Agreed! I'm looking forward to my next project that I can put this into practice.
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.
NICE! Thanks a lot. Always looking for ways to improve 👍
Hi Darrel. Thank you. Yup...when we stop improving, life gets a little boring
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?
Really wonderfully helpful info. Thank you
DavidStokely, you are so welcome my friend!
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
Excellent video Garrett - thank you so much for the great information. Making that finishing pass is going to help me out a lot!
Jim, glad you liked this info brother!
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!
this video helped me understand the difference between up and down - big thanks
Hi Stuart. You are very welcome!!
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.
Another great video Garrett
Thanks Matt!
This video is worth its weight in gold!! Thank you!!
Hello Darwin! Thank you and you are totally welcome!!!
Thank you sir, i thought i was well informed already but this was great knowledge i did not know.
Scot, I'm glad it was helpful brother! Keep up the good work!
Great stuff! You make it easily understandable 👍😉 thank you for your sharing. Subscribed. Your channel is a must! 🙏
Hi Vasco! Thank you and you're welcome. So glad to have you on board. And I like the emogies
Nice! Great info that will translate into cleaner machining for me! Awesome.
Hi John. Definitely glad this will help you. What kind of projects do you like to make?
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.
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!
That's awesome. Thank you so much. I have been using up spiral bits all this time and had no idea that down bits would clean up the letter cuts. The extra tool path is a very good tip. It will save me a lot of time sanding. Great video.
Hi Rnady! It kinda blows you away when you realize how clean of a cut down cutter give when you first learn. You'll love 'em. If you're interested, I am now selling bits made in the USA. You can find them at www.idcwoodcraft.com.
Happy CNC'ing, my friend!
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!
I haven't set up my Longmill yet but appreciate all the tips that you give out. Can't wait to get started but really busy with work right now.
Ron, you are so welcome my friend. I feel the same as you, not enough time in the day to get everything done. Am I right?
So informative! Thanks!!!
Hi Bev. thank you and you're welcome. What type of projects are you venturing into?
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.
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!
Very clear explanation
Hi Bill. Thank you. What kind of projects do you make on your CNC?
Great job, thanks for sharing!!!
Sarah, you are welcome :)
Perfect information, thank you Sir!
mchtzn, no problem brother I'm happy to help!
great knowledge sharing. i learnt something today. and it's gonna help my cncing
And, Anton, my friend, your stuff is going to be a magnitude better than the already amazing stuff you make!
Incredibly helpful. It’s the first video I have come across that explains so throughly the mechanics of up/down bit.
Keep up the good work and thanks for all the information.
Hello Zeid! Thank you for the boost. And so glad this helps. What kind of projects do you currently do?
@@IDCWoodcraft credit where credit is due, no need to thank me.
I dabble with a bit of Laser + cnc. The work I have done with the cnc has mainly been signs (on wood), inlay work, done some acrylic LED lamps and of late on slate work. Everyday is a school day. Always learning !
@@zaidal9975 That is the best part...always learning...at least most of the tine
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!
great job , very helpful
Thanks Mike!!
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!
Thank you for your info! I greatly appreciate your help!
You got it brother. More to come...
I learn so much from these videos, I can’t thank you enough.
Steve, glad to help my friend!
Thanks, that really has solved a problem for me. I spent lots of time Sanding out the marks.
Hi Bumps. you are very welcome and so glad this virtually kills the time you would be sanding.
I'm agreeing with you 100%.
The vids you produce are excellent and are helping me alot
Hi James. Thank you!
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?
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!'
My growing CNC knowledge needed this tip, appreciate it Garret.
davidlefurge2946, glad to hear it brother!
Very helpful, thank you.
Hi Bruce. You're welcome!!
Loved the video, and loved the explanation. I really don't think you could have made it clearer, and I look forward to referencing this the next time I try to explain machining. I will certainly be subscribing myself, thank you.
Hello Donald! Thanks for joining the channel. How long have you been at this stuff? You used the word 'machining' ...tells me you've had some experience at this stuff.
@@IDCWoodcraftthank you. Physically, I've been involved for a couple of years now, however I've held an interest for far longer, and very much enjoy content and information on this type of thing.
Great info and very informative, love your videos
Jer, thank you brother. Glad you liked this one.
Great info !! Thank you.
Hi Jay. Thank you and you're welcome :)
Thanks for the game changer for me. I have been dealing with this problem for quite some time. All the time I thought this problem was a dull bit. Great job explaining.
Hey Dennis. Your projects will come out much better with a final pass.
Really great info thanks
Leon, you are so welcome 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!
Good info Garrett!
Thanks DC!!!
thanks sure saves a lot of sanding
You are so right, Bruce! Yes it does!
Great explanation, have had this happen many times. So much to learn, common sense once explained. Keep up the video’s, your a wealth of knowledge!
I am glad to hear it brother, keep working hard and learning everything you can.
That was great. I have a CNC coming in a couple weeks and this has really helped me understand the difference.
Ryan, you watched one of the most important videos you could watch when it comes to surface finish. I can't wait to see what you create when your machine arrives.
Aha! Very informational. Thanks!
Hello Christian. Thank you. hope it solves some issues you might be having.