JohnPW":2te1lfe8 said:The reason for a threadless vice is lighter weight. I want to make a work bench that quickly knocks down, using wedges. It would taken apart after every session or at least at the end of the day. The top would be a separate piece and I though having an extra lump of 10 to 20 kg of metal sticking out at one end of the top would making it awkward to handle, even though it would have the advantage of making the work bench heavier.
But I actually do have several metal vices; a Record 52 1/2, 52*, and also smaller one, can't remember the number off hand. So I'm just looking at other possiblities.
The idea of using a holdfast horizontally, against the leg or bench front of course is not a new one, you could add guide rails and a wooden cheek to make it more convenient to use, in effect you'd have a vice and the holdfast is just supply the clamping pressure.
Eg:
How about a vice that works like a F cramp? You would have slightly loose fitting rails that go into the bence and the final locking could be done with cam.
A wooden screw would be nice but from what I've seen they and the tool for making them are very expensive, I've got a large old and rusty C cramp that could provide a metal screw to try out for making a vice.
*I had to stuff the Record 52 1/2 and 52 together in a suitcase and bring them home on the bus, never again!
a wagon vise doesn't necessarily add any weight or (much) bulk to the bench top. it doesn't address your need for a face vise, but it could be a good feature for your portable bench.