3/8 bore is too small for scotchbrite wheels. You want 1/2" arbor.
I recommend one 3M on one side and a buffing wheel on the other. One slip and a part is toast. Yep. I hit the wheel on the opposite side. Buffing wheel won't damage a part and it helps balance the grinder. I used one 7A wheel for the whole build.
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
Last edited by wirejock : 08-06-2022 at 08:23 PM.