My cylinder is the tube out of the tailstock of a large lathe. It is hardened and ground all over, the end was dead square to the axis and it had no wear on it and was parallel to close limits. I never slide it, I always pick it up to move it. Along with a height gauge it always sits on my surface plate.
use finner and finer abrasives, 5k-10k grit stuff at the end, and boom, mirror finish
Toolmaker51 (Feb 5, 2021)
Toolmaker51 (Jan 30, 2019)
NortonDommi (Feb 6, 2021)
A black oxide conversion of the surface will be uniform in thickness, easier to see against and will hold oil so that the square doesn't rust.
I wanted one but couldn't afford one and I've since found that using an affordable 2-4-6 block has done everything that I wanted a cylindrical square to do, plus they're useful for cribbing things on the mill table. When I get around to it I intend to black oxidize the surfaces of these blocks.
If you can't make it precise make it adjustable.
There are currently 1 users browsing this thread. (0 members and 1 guests)