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cnc bit help for 1/4" ply12/30
What is the correct type of bit for cutting 1/4" prefinish one side plywood for drawer box bottoms. using cnc to do this.
I use a single flute 1/4" downshear at 18,000 RPMs moving at 12 m / min (472 inches / min).
Same. Programmed to cut a little deeper as to the fact we cut backs after cabinet parts and the valleys have a tendency to leave frayed edges.
We cut face up.
thanks guys. really appreciate it.
interesting --- for 1/4" prefinished MDF and veneer core, i cut face up, and use a 1/4" two flute spiral down cutter, ~450 IPM. we find the hardest thing is holding the 1/4" down on the spoil board.
we return onion skin everything whether on the 40hp pump or 20hp pump flat table
Also, try blocking the open areas off if your table is bigger than your sheet
You can also flycut before to reinvigorate the mdf
We cut a lot of 1" plywood and recently with some crap I leave about .020 and we just take a laminate trimmer to it
We have a 3 Flute Downcut bit that does a great job. The 3 flutes give a better finish and the downcut helps hold the work pc.
Thanks again. Chuck, was is the part number for the 3 flute bit?
1/4 Dia , # SRD702SL On pg 27 of the catalog
We've always cut ours face-down using the normal 3/8" mortise compression bit.
We do it face down for various reasons, but since it's face-down the mortise compression bit leaves a nice cut as long as cut depth is sufficient.
Our backs sit fully in a dado so even a tiny fuzz is not noticed. But that's rare.
Flipping 1/4" is not hard, especially plywood.
We have a new machine (CNC) coming with a much larger tool magazine so we'll revisit what we're cutting it with and may do what some of you guys are doing, maybe it will give us a better yield.