Just a point of clarification, crucible holdfasts are made from ductile iron which is actually is fairly flexible (unlike the cast holdfasts you find...
I think an end grain sole would be considerably more prone to wear than a regular sole. The end grain will just create greater friction causing more...
The “Roman Workbenches” doc was a great resource for me when working on this bench. That said, if anyone decides to build a Roman bench, I would not...