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Just a few days ago, I received a cat. from a woodworking co. Thumbing through it I found a bit that seems interesting, at best. It is described as "compression up an down spirals". They, (the catalog), states this will stop tear-out.

I may be looking at it wrong but, woud this not put the chips right in the way and create "chatter" on the bit? Has anyone heard or seen such a bit?
If needed I'll try to find a link to the bit.
 

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Ken, these bits are designed for material that has laminate or veneer on both sides. Simply put, they work.
 

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Hamlin said:
Just a few days ago, I received a cat. from a woodworking co. Thumbing through it I found a bit that seems interesting, at best. It is described as "compression up an down spirals". They, (the catalog), states this will stop tear-out.

I may be looking at it wrong but, woud this not put the chips right in the way and create "chatter" on the bit? Has anyone heard or seen such a bit?
If needed I'll try to find a link to the bit.
------------------------

Hi Ken

You know I like routers bits :) so
I sent off one, I was not to sure what they said about the bit would be true, well it's almost true it will not stop the rip/chip out but it helps on veneered plywood , but it still rips if I plunge in or out ,just a bit of the plywood but it's great on the strait away.
All in all it's a great bit if you do alot of plywood and melamine work like I do, the little chips in formica can turn your day into a bad one real quick.

http://www.mlcswoodworking.com/shop...pages/bt_solid.html#compression_updown_anchor

This 2 flute solid carbide bit is needed to get clean, chip-free and splinter-free cuts in composite sheet goods such as Melamine or 2-sided Formica/Laminates and veneered plywood.
The Up-shear/Down-shear design of the bit cuts toward the center of the sheet from both sides at once, saving time and eliminating waste.


Bj :)
 

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Thanks Mike, BJ. Perhaps when the budget allows I may be getting one.
It just kinda worried me about the chips. I've had a few "mishaps" when chips got built up and the bit started to chatter, (made many pieces of kindling). :D
 

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Ken, the compression bits are designed for edge trimming so there should be no way for the chips to build up. When working with veneer you can pre-score your trim line with a sharp utility knife to help prevent tear out. I have never had any chipping problems with laminate since I make sure I am using sharp bits.
 
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