Circling back, nephew and I have the grinder working pretty good and have been practicing on old mower blades and thin stock trying to work on technique and touch. Summer has been brutal this year so my old arse hasn’t progressed as I should have. About to order a small wheel, which should complete us for a bit.Here are two plywood roughs we are toying with. Any further thoughts on design? As always, thanks in advance and for sharing your knowledge.