fixture for truing the bore of a hyd cylinder rod eye

[Toolmaker51]

We do the same thing at work; suspending oversize [in this case ludicrously oversized] side plates for a machine; it makes ball mill spheres. It's about 2.5 x 30 x 40. The gantry holds heavy end while milling a pair of 1" keyways 10" long. They get re-cut 1.06, 1.125 and 1.25 as they wear out. An import mill, it's done many of them
and seems to hold up.