fdcox- I am certainly no expert, but, if you are in the US, Harbor Freight has a set (cost $19.99) which contains a 21/32" I.D. and 3/4" O.D. bushing which would seem to do the trick as your 5/8" cut is 20/32" and the shank on the bit is usually 1/4 or 1/2" so will also fit. Just check to make sure you don't have any interference when you chuck everything up.
rstermer |