Compression spiral cutters

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.

Click to expand...

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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