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compression bits

12/18/24

We cut primarily commercial cabinets parts out of 3/4" thick laidup panels with liner on the back and plastic laminate on the face, also white melamine.

On a Weeke and a new Morbidelli X100. Currently using Vortex 3130XP compression bits.

Do you guys have any suggestions for a better / longer lasting bits? What about using bits designed to cut metal?

Thanks!

Eric

12/18/24 #2: compression bits ...

Stuart Douglas

We are using the same bit (xp) for 2 side prelams, and get about 15 sheets before the cut edge quality becomes burred. Using a Thermwood CS43. I use a regular 3830 on the white melamine and get about 50-60 sheets. I've thought about using a diamond bit, but our dust collection is less than stellar and I fear that I'll just cook that expensive bit rather than get increased cutting yield. Curious to hear what others are getting too...

12/18/24 #3: compression bits ...

Dropout

Member

If you do 2 passes, use different bits. The finish one will last longer. When it wears out move it to roughing.

12/18/24 #4: compression bits ...

Karl E Brogger

Laminate is so hard on tools.

I use a 3189XP for mdf, melamine and laminate panels. 800ipm. I'd have to look in the controller but probably 16k rpm. I try and do arc'd toolpath corners as much as possible to eliminate dwell time. I believe that helps with tool longevity.

Laminate just piss pounds carbide.

If I did a lot, I'd switch to PCD, but I rarely cut much laminate, some melamine, and a fair amount of mdf.

If stay down is an option in whatever you're generating programs with, I believe that also helps a lot with tip wear not having to plunge as much

12/18/24 #5: compression bits ...

Mike

Karl,
If 16k is accurate, that is a big chipload(0.025). How is quality of cut and life of the bit? I have always tried to keep it at 0.0185- 0.020.

12/18/24 #6: compression bits ...

Mike McClaran

Best way is to decrease rpm until the cut is no good, then bump it back up by 500 rpm. Your chip should be cool and increase your bit life. Most wood workers are spinning 5k too much. The tooling guys love you the most.

12/18/24 #7: compression bits ...

Karl E Brogger

Member

Website: http://www.sogncabinets.com
Mike, I'll have to look tomorrow at rpm. I meant to after I posted, and failed.

Life is acceptable. Never as much as you want, but what I can realistically accept? I rarely do a big run of any one material other than plywood which I've two tools that is all they cut. So I don't have hard data numbers. I feel like I'm in the ballpark with Stuart.

12/19/24 #8: compression bits ...

Chad R

Member

Website: http://www.northwayind.com
We have 5 nested base routers, Homag and Northwood. We also have a host of other cnc machines including 3 Homag BAZ's. I started testing PCD tooling many years ago with many vendors. I started testing with Leitz when a gentleman that I had known from the past stopped in working for Leitz at the time. Started testing 191031. It had a high squealing sound like it was going to break. We ended up sending our material to Germany for them to test. Our material turned out to be 20% more dense then German material. They came back to me with 22000 RPM and 20 MPM on their tool 191031. I'll admit, the tools get discolored when they are dull, probably the high RPM, but we are still way ahead of running carbide. We normally get 3 sharpening's on 12mm PCD. I discovered over the years to have one tool dedicated to melamine, and one tool dedicated to laminated material. The melamine tool lasts for weeks running 2 shifts a day. Don't ask me panel numbers, I don't know. We are a contract manufacturer, running different product every job. The tools are logged by machine and operator, and I see the tooling costs every week. I know we are way ahead of the carbide days. I've been working with another company called Wirutex. We are running a couple of their tools now. S14300 is their 12mm nested PCD tool. Having great success with that tool also. Forgot to mention, we are running all shrink fit HSK63F tool holders also.

View higher quality, full size image (1620 X 864)

12/19/24 #9: compression bits ...

Dylan Bayliss

Member

Website: http://www.machineconsult.com

Great post Chad, would love to connect on your success, we sell tools online and are a Leitz/Wirutex dealer, never had much success with PCD..if you have time would appreciate your insight to help others..
dylan@machineconsult.com
www.cnc-tool.com

12/19/24 #10: compression bits ...

Karl E Brogger

Member

Website: http://www.sogncabinets.com

Mike. Confirmed. I'm running those tools at 16k rpm
Makes me wonder if I should bump the rpm up 500 to see what affect it has.

I'm running my chip breakers for plywood at 18k rpm and around 600 IPM. Unless we hit something stupid in the plywood, I'm usually getting 100+ sheets out of the plywood tools.

I haven't touched the speeds and feeds on those tools in five or six years. One of those, "it's working, don't dick with it", things.

The shrink to fit tool holders intrigue me. I like the idea of taking some of the rotating mass out of the equation, and removing fail points. Removing mass has to help with spindle life and just overall smoothness. Not having to worry about a collet being worn, or somebody not torqueing something correct, or not cleaning the assembly prior to torqueing would be good as well.
What are the downsides?
I haven't looked to see what it costs to get setup with it.

12/19/24 #11: compression bits ...

Mike

Karl,
500rpm won't make much difference
800ipm with 2 flute @17k =0.0235
800ipm with 2 Flute @18k =0.022
800ipm with 2 flute @20k = 0.020
All spindles have a bell shaped power curve, so you lose significant horse power at higher rpm. Thats the downside of quicker speed. You might consider a 3 flute tool.

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