More work on the linear rail beds tonight. I'm working on the one to the right in the picture. I'm now within - 0.001 to + .002" of level along the long axis as measured with a master machinist 10" level with .0005" per graduation.
Not bad for hand sanding. I do have a consistent out of level condition where the inside rail side is lower than the outside across the short direction on the table. I plan to shim this out with a rail length shim.
Andrew