Knotty wood work

3 жыл бұрын

End Grain Cutting Board Planing With CNC 2" Spoil Board Surfacing Bit

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@Seratjati17 күн бұрын

Very good video. That one i need to

@builtbybittleАй бұрын

I wouldn't have believed it if I hadn't seen it myself. Thanks for the demonstration!

@Knottywoodwork11 күн бұрын

I actually use these 1/8" compression bits a lot to cut out everything. They work very well as long as you dont push them past about 80-90IPM depending on the material.

@builtbybittle11 күн бұрын

@@Knottywoodwork I went ahead and bought them and they've been great.

@YuvakTuladhar2 ай бұрын

I bought Hozly compression 1/8” bits and tried as shown above. It worked really nice and clean. No tabs needed but don’t turn on the vacuum when you are cutting. The dust in between keeps the cut parts together!

@Coffeesurgeons2 ай бұрын

wow that edge finish is so amazing looks like furniture grade quality! So smooth and straight and perfect. amazing..... :(

@davidq78263 ай бұрын

This is the type of clip that is going to get people hurt. Better wear safety glasses for when at least SOME people who try this break the bit and goes flying. Rule of thumb never go more than half the diameter of the bit per pass. Obviously that's different with v bits. Just be safe when doing something dumb like this.

@Knottywoodwork3 ай бұрын

I am not sure what you are trying to say here. This is common practice with compression bits. Can you run at 300IPM? No, that will break the bit obviously. Running slower dependent on material is how you need to do this. More like 40-50 IPM.

@troymartell1514 ай бұрын

how do you set it to cut through a 3/4 piece of plywood in one pass?

@PiercesPerfectPieces3 ай бұрын

Huh!?!? 🫠 Make your doc (depth of cut) about .755 & let er rip (go)!!

@JDMeister4 ай бұрын

I've bought the Amazon ones and they are great even in a crappy desktop cnc kzread.info/dash/bejne/eGdo0adsZLavc7g.htmlsi=LjG1gW6U9RdRwzGN

@tireballastserviceofflorid77714 ай бұрын

How many feet of finger joint would you get out of a single bit? I make bee boxes and this would be a game changer if the cost per foot were similar.

@Knottywoodwork27 күн бұрын

I have done 10-15+ sheets and some hardwood projects in between. When you buy them in the 10 pak they are about 3.50$. You cant beat that. 0.35$ per sheet? You have to cut decent plywood though. I had a customer bring their own plywood for one project. About 15 sheets. I broke 3 bits on one sheet. I made him go get better plywood. I think the glue on the stuff he had was different. Much harder or something. Not sure.

@rgphotofilms6 ай бұрын

I saw this video and decided to give the bits a try. Bought 2 bits for a total of $10 on Amazon. Have only used one of them and did a test cut with some shop jig star knobs cut out of some very old scrap 3/4" plywood. Profile cut full thickness in a single pass - they turned out perfect - cut 16 of them out of 12"x12" piece. I didn't have to use tabs (the sawdust held them in - even thought they were only 2" in diameter - much smaller than the part shown in this video. I followed the guidelines provided for best feeds and speeds, my settings were 18,000 rpm at 55 ipm. Thanks again for helping out the CNC community. This video and info is a game changer for sure!

@tireballastserviceofflorid77714 ай бұрын

How many inches or feet would you guess the bit would last in 3/4?

@troymartell1514 ай бұрын

What's your settings to make that ¾"plywood cut in one pass

@Knottywoodwork27 күн бұрын

I have done 10-15+ sheets and then some hardwood projects on top of that. They are worth it. Buy the 10 pack and they are 3.50$ each. You cant beat that.

@jarrodsnipes556211 ай бұрын

Are they the same bits on both sites? Big price difference. I'm about to order some off of Amazon, but just want to make sure they are the same.

@mugsy8412311 ай бұрын

They are not exactly the same but they are similar and will both do the same job. I like the ones with the longer flute length. I have mostly used the ones from Ebay. The ones in the video are the Ebay bits.

@mrwonk Жыл бұрын

That's what I'm talking about! This is the kind of thing I'm looking to do with a CNC.

@donmoss1972 Жыл бұрын

What brand name are the bits ?

@mugsy8412311 ай бұрын

They are just cheap chinesium bits as far as I know.

@jamesstodgel7166 Жыл бұрын

holy shit bro!

@vavann56 Жыл бұрын

How many KW the spindle?

@Knottywoodwork Жыл бұрын

3hp

@d-rock7937 Жыл бұрын

All that packed sawdust equals lots of heat on the bit and such small diameter it’s likely to dull very quick. Just because you can do it doesn’t mean you should do it.

@Knottywoodwork Жыл бұрын

I have done dozens of sheets with one bit. They work very well. Take a look at mini jenny bits. They are much more expensive than the ones I listed but similar usage. This is a thing, it works well.

@cristianaguilar17292 жыл бұрын

Can this work on a belt driven cnc router?

@Knottywoodwork27 күн бұрын

I would not recommend it. There are some pretty good pressures being applied to do this at full depth. I am sure you can use the same bits but I would not cut all at once.

@drewjbx2282 жыл бұрын

Hey, I just got my CNC table and still setting up. Have you tried this on 3/4 MDF....Do you think these bits would have any issues with MDF?

@PiercesPerfectPieces3 ай бұрын

😒 🙄 🤦‍♂️

@FlipFlopPilot2 жыл бұрын

Well I bought some of these bits and they are a game changer. I cut 3/4" plywood in a single pass on my CNC and just finished a job cutting 1/2" Baltic Birch as well. Cut at 17000 rpm at 60 ipm (a bit less on the chip load) with out any issues. Nice, clean edges on both the top and bottom and very small dog bones on the inside corners. They pack the saw dust in so no tabs or hold down needed. Thanks again for the video and the info.

@danewoodcraft25332 жыл бұрын

What speed and feed are you able to use on MDF at full depth? How long do your bits last?

@joesaccomanno47912 жыл бұрын

Just received the bits and they work amazing! Thankyou Did you ever try to cut melamine with them?

@joesaccomanno47912 жыл бұрын

Just received the bits and they work amazing! Thankyou Did you ever try to cut melamine with them?

@offkub2 жыл бұрын

wood thickness ?

@Knottywoodwork2 жыл бұрын

As it says in the title - 3/4"

@albatros17522 жыл бұрын

wrong application, use sled over router table and save your self headache and money. this vii is just for sake to make vid, sorry

@mugsy841232 жыл бұрын

Why would anyone who owns a large CNC use a hand held router and a sled? Dont be a hater on CNC.

@albatros17522 жыл бұрын

@@mugsy84123 because sled will give you superior and clean box joint, I dont hate CNC im using them since 2000

@Knottywoodwork27 күн бұрын

I did the finger joints just because I was making some bee hive deeps and supers. You can use these for any shape. If you are saying to use a router and a sled I think you are missing the point. I can set up a full sheet and walk away and do something else. Come back and load another sheet. Then go do something else. Why would I want to use a router and sled over that?

@JohnColgan.2 жыл бұрын

Watch how Broinwood does his surfacing cute?

@JohnColgan.2 жыл бұрын

If you started at front right edge traversing left then the leading Vetter edge would cut into the wood rather than cut outwards. You also need to overlap the cut passes. An expanding cut from Centreline would also work clockwise if you could space final cuts to span the edges

@daveengstrom92502 жыл бұрын

I am building a wooden boat. Do you know how to layout/make what someone called "puzzle piece joints"? These are used like scarf joints to make very long pieces of plywood. In my case 19 feet. I have a CNC file for the hull panels, but not the joints.

@Knottywoodwork27 күн бұрын

You can use any shape you want. I have done some with about a .003 offset on each piece using the same vector for inside and outside. They are pretty tight but will allow for some seasonal wood movement.

@alexgarza96423 жыл бұрын

I use a KRB .500" 2+2 Comp. Solid carbide extended life. Love em!

@hardt27883 жыл бұрын

Verified this works great setup: avid pro 70IPM 16000RPM 1 pass, clean cut

@8thsinner3 жыл бұрын

Damn that was loud...lol What kind of rotary mount are you using, and also, would that be suitable for the shapeoko pro xxl?

@steveborn34553 жыл бұрын

I would be very interested to see if an upcut spiral bit would work just as well. Have you tried that yet?

@Knottywoodwork3 жыл бұрын

Using an upcut bit would defeat the whole purpose of getting a nice edge on both top and bottom. With this type of compression bit you get both.

@steveborn34553 жыл бұрын

@@Knottywoodwork Thanks for the response. I make wall mounted wood sculptures. I contact cement plastic laminate to the face of my 3/4" Baltic Birch and then cut the pieces out from the back side with a 1/4" spiral upcut bit. I'm using a Ooze Nest 4'x4' with Nema 23's and very small belts. I need to do 12 passes at about 40 ipm to avoid crashes and broken bits. I was surprised to see you through cutting in just one pass with a small diameter bit. After seeing your video and one other, I think my problem is that my CNC is not beefy enough. When I win the lottery, I may upgrade to an Avid 4'x4'. I may then try a 1/8" spiral upcut as I don't care about the back side appearance.

@acerjuglans3838 ай бұрын

@@steveborn3455You should easily be able to cut your 3/4" plywood in no more than 3 passes with a 1/8" compression bit, set at 70ipm and 12000 rpm. I do it in 2 passes in prefinished birch plywood.

@rockabala13363 жыл бұрын

Which CNC is that

@Knottywoodwork3 жыл бұрын

I have an Avid PRO60120(5'x10') with NEMA 34s, 2.2kw spindle and a 4th axis rotary.

@faldasrojas46363 жыл бұрын

It would work on 3/4th depth of normal wood? Like idk pine tree?

@Knottywoodwork3 жыл бұрын

I have used it on mostly plywood but it does work on soft and hard woods. You just have to find the right speeds and feeds.

@WindRidgeWoodCrafts3 жыл бұрын

I agree with the responses below on taking a deeper cut and changing direction off the board. I can run the same bit through the same board and get burning at a shallower depth and no burning at a deeper depth, with the depth difference being about 0.02". Not a very intuitive result, but it is repeatable. I screwed around with this often enough that I ended up making an online program to generate the GCode at windridgewoodcrafts.com/utilities/cnc_flat/. I hope it helps.

@myvoice54663 жыл бұрын

youtube n people like u gave us so much knowledge... gr8 post more videos....

@rolandgdean3 жыл бұрын

First thing I wonder about is deflection and accuracy from front to back. When you measure the piece with calipers, how far off is it?

@dadealeus2 жыл бұрын

There is significant deflection, for sure, but it seems like something that could be improved upon. Check out the dogbones at 1:50; you can a very obvious visual difference between the definition on the top side of the cut and the bottom side of the cut. However, for the time and material savings (using such a 1/8" tool on 3/4" plywood in a single pass), there are going to be some trade-offs. I imagine this could be improved upon though if the deflection is critical enough to affect your project. Still pretty damn cool.

@fierceflyer53 жыл бұрын

Are these up/down spiral bits?

@Augustheatsucks3 жыл бұрын

Compression. So I believe both up and down. $$&

@mugsy841233 жыл бұрын

Yes they are compression bits.

@JohnColgan.3 жыл бұрын

Expensive, Impressive & likely pay for themselves very quickly in saved time & less bit breakage. Though I'm sure that speed & cut depth is from industrial strength CNC and not home/hobby equipment. I wouldn't even attempt that on a plunge router

@stevespencer51583 жыл бұрын

Why arent you posting more videos.

@user-ub6qy6ik5z3 жыл бұрын

좋아요. cnc는 자체적으로 만든 것인지요. 멋집니다. 탐나요. 어떻게 만드나요. 판매도 하나요. Okay, so the cc is self-made. That's cool. I want it. How do you make it? Do you sell it?

@FlipFlopPilot3 жыл бұрын

Looks like a great bit to try, thanks. From the looks of the edge of your plywood you have some chatter going on. Are you able to get smoother cuts by going slower or is this just because it's a rack and pinion drive system?

@Knottywoodwork2 жыл бұрын

Good question. At the time I was looking for a way to cut smaller dog bones in flat pack plywood designs and these fit the bill. My machine is fairly rigid. I imagine slower would give a better finish.

@dadealeus2 жыл бұрын

Yeah, I have the same brand (an Avid 5'x10' - aluminum extrusion and rack and pinion drives), as well as an Axiom 8 Pro (which is all steel construction with ball-screw drives). So far, the Avid machine actually seems more rigid; the Avid machine's gantry weighs significantly more and has a much more powerful spindle than the Axiom machine - so, increased inertia, coupled with increased cutting torque may just effectively make it more rigid for most projects, even though there's more flex in the aluminum frame than a steel one. All that to say: it's not going to bounce with an 1/8" tool - so the cut inconsistency is likely due to tool deflection. At 1:50 in, you can clearly see a difference in definition between the top side of the dog holes and the bottom side (where the tool would have deflected the most). Either way, pretty incredible to see a 1/8" tool eat through 3/4" plywood in a single pass.

@dccreativeindustries6413 ай бұрын

K@@dadealeus

@wil16853 жыл бұрын

make the pocket larger than the cutting board, have the router change direction off the workpiece

@o.g.bwoodwork3 жыл бұрын

Great work

@Knottywoodwork3 жыл бұрын

Thanks

@whs22203 жыл бұрын

You're not cutting aggressively enough. You need to get into the .004/.006 chip load range. Not sure what your cutter diamer is but my 2 3/8 cutter runs nicely at 200 ipm at 12k rpm which is .0055 chip load. If you don't take a big enough bite you won't get shearing action on the cutter face and you just push the fibers over and generate heat. Try it with a lot less RPM and or higher feeds.

@robbrown66673 жыл бұрын

I had the same problem with the Walnut burning. Never found a solution!

@Knottywoodwork3 жыл бұрын

Obviously others have had better success than I did. Possibly I need to try different speeds and feeds? Rotate the cutters on the carbide inserts? What worked best for you on your cnc?