Post #402199 by sar1 on Tue, Aug 19, 2008 8:36 AM

There are two possible solutions to the 20 thread problem, you could try to find an arbor adapter with 20 thread, I could only find one here http://www.covington-engineering.com/electric_motors.htm at the bottom of the page or you could get a keyless chuck that has the adapter already attached and mounted to the motor shaft with set screws, http://www.grizzly.com/products/Motor-Arbors-1-2-Arbor-1-2-Keyless-Chuck/G5552.

[ Edited by: sar1 2008-08-19 08:37 ]