I have built my lower axis/frame out of A36 1/4 wall tubing, welded using a MIG. The rails will be mounted to this after I have the ways surfaced by a blanchard grinder.
The Blanchard will only be removing less than .05 inches of material across the ways which are supported by the frame which is VERY strong.
When I built it in this manner I was planning on having it stress relieved before grinding, but a friend of mine who is a mech eng type says that given the strength of the frame and the small amount being removed, the stress relief process is wasted money.
Any thoughts on this?