I'd like to make some holdfasts for my bench. I'm looking to make the type that were used in the Roubo-type benches. I have a friend who has a welding gear and metal stock and an anvil. I supply the beer for afterwards, he lets me heat up some cold roll and beat it with a big hammer. Basically going to play around - he said he might even show me how to put a twist or two in the design.
If the holes in your bench are 3/4", what diameter would you use? 5/8"? I plan on making a few of varying lengths, but didn't know how much smaller they needed to be than the hole.