Don't find a technique forum, so posting here.
Apologies if this isn't the right forum.
How do you upset to one side of a square rod?
I've wanted to make a pair of holdfasts for a joiners workbench
since I first read about a guy named Rob Tarule
using them in an article in Fine Woodworking.
They're very fast and flexible compared to a vise.
Since I read that article, Chris Schwarz has gone on a tear
and popularized the Roubo workbench, so much so that
you can't hardly swing a dead possum without hitting
one on the Interwebs.
Peter Ross recently made a close if not exact replica