Originally Posted by
pastorbobnlnh
I don't believe the cutouts on the cassette cog would present a problem when they could be modified for freewheel body use. There are enough splines on the Shimano/Sunrace type body to make up for any inexact spots.
Looks as if ebay has what I need to get started on this project.
RMT Pneumatic Knuckle Press. It's local pick up only in CA. Can anyone facilitate?

About the cutouts, I was thinking the much larger center hole required for the freewheel would be getting pretty close to them. They start at a minor diameter of just over 2"
Some handwavey math gives approximate power needed - 2" diameter x pi x .075" thickness x 50 ksi shear strength ~ 12 tons). I can't find any specs on that press, only links back to the auction and other listings of the same item. I will not pick it up for you. :-p