I have a metal lathe with a broken part. The part is not available, so I have to machine one up from scratch.
As this part is the lower half of the crossfeed assembly on the turret cutter, it has to be accurate, which is no problem for straightness and tolerance. However, as ways and gibs have to be able to hold lubricant (so the parts don't just slide on each other and wear out), there must be a standard for surface finish that's preferable for this type of assembly.
I can't seem to find a clear specification for what to use, so what would be an appropriate finish type for those conditions?