Grand Master and J H Williams 6" No 106 bridge clamps, both can handle material from 1 3/4" to 6". No bends, welds, or breaks. Both for $45 obo shipped.
This 1/2" set and box belonged to my grandfather, it originally had a 1/4 set that went with it according to the tag in the toolbox, but that's missing. I love the smoothness of the ratchet mechanism.
I have a #539 Delta Specialty combo unit, of which the base/bench has been modified over the years. It's got a 8" tilting arbor table saw, 4" jointer, and 9"x36" lathe, powered by line shafting and a Master electric motor and similar to the one powering @JosephLaur jointer. I have not seen many...
I have an older Ridgid 45cpn vise that has t style knurled jaws in it currently. Is there a method for getting the pins underneath out? Can smooth t style jaws be purchased anywhere?