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Cut it with a holesaw which has a 1/4" centering drill bit. Put several layers of masking tape on the back side of the plywood which will prevent "chipout". Use slow speed and very light pressure and a lot of patience and you will end up with two perfectly clean edges.
Nice looking tube BTW. You could have easily gone one step further and ripped your plywood tube down the middle and used it as a mould for a fibreglass or carbon fibre tube, but they just ain't as pretty as wood IMO.
CS-John B
Last edited by ausastronomer; 06-08-2007 at 08:34 AM.
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