Good job Craig. You were making things more flexible and I was making mine more solid.
One of the first mods to my grinder was to mount it on a piece of ⅜” plate. My “precision?(lol)” tool rest is fastened to the plate.
Yes mine is now attached in 4 places and is quite solid.Your one piece tool rest has given me an idea for stiffening/stabilizing my tool rests. Rests attached to the wheel guard covers only just aren't all that solid.
Here’s a link to a repro Southbend grinding jig. It doesn’t look like it would be hard to make.
http://www.alisam.com/tool-bit-grinding-gage-jig.html