Again I am not a bug fan of Roubo type benches, I prefer the European style bench actually Mine is kind of modern because the top is in two pieces with a tool tray in the middle. I stated in an earlier post that someone on this forum said he didn't like the shoulder vise for hand cutting dovetails because he was forced to stand to far back. I thought he had something because I had to stand at an awkward angle when applying edging tape to a series plywood pieces so I shortened the screw 2 1/2 inches which really helped. Hear is a picture of my unfinished shoulder vise.
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And then he said that he likes using a moxon vise better. So I though why not incorporate one into the bench build because just trying to balance a vise while trying to clamp it can take three hands. so I did. Some pictures show the development . Yes with a little practice on can see square and level but I found I liked getting the board into the vise vertical also it really helped the square and level out. Also height is important when sawing. I found that my body liked keeping my elbow right around 90 degrees helped and I could get close enough that my body could get turned enough so that the swing of my arm could be at right angles to the work so that it did not have to compensate there either. pictures of development, leveling vise and using it.
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I show it with 3 screws but the middle one is used on pieces under 12 wide and removed when wider material is used. You can't see it or then but I have a key in two places in the vise so the board can be place against it for vertical and the middle one removed for wider stock. I know you are wondering about the hardware I made my own, that is why I have more that two.
So why am I posting this?