Gerald D
06-18-2001, 02:33 AM
The difference between spiral up-cut and spiral down-cut bits is shown below. The down is the clean one, but we had an air jet on the bit to clear the chips (lots of dust). Both made with identical settings. These are pockets for business cards with holes for thumb and forefinger. Timber is meranti, 1/4" bits, 2 minutes cut time per pocket.
8494
8495
8496
8494
8495
8496