Thanks Bill! I enjoy those restoration videos as well. I may try making one myself. I'm not sure about the best way to shoot it, but I'll figure it out as I go along.
And beautiful restoration-thanks for posting! I think 7” was originally the standard because 3450 rpm produces the ideal SFM speed for aluminum oxide wheels at that time.
Good eye! Yes, it is the Bench Vise Stand from ShopNotes magazine. You can purchase the plan for it here: www.woodsmithplans.com/plan/bench-vise-stand/ Since my bench vise is mounted directly to my bench, I repurposed this stand into a grinder stand. It's a nice design and pretty sturdy for MDF. If I were building it specifically as a grinder stand, I would probably make it a little bit wider or do away with the lip around the top. It's a tight fit for the grinder, but it works.