I'm working on my first real workbench (more or less a Roubo style), and I'm in the middle of working on my leg vise. The leg vise is a traditional pin board/parallel guide style. I have not had the opportunity to use a leg vise in person and while I have tried to refer to every book/video/set of plans I can get my hands on, there are still a few things I don't totally understand. I'd like to really get it all clear in my head before I start removing material in my workbench leg and vise chop.
I have a Yost 18" vise screw and the screw major diameter is about 1.163". (The picture shows the nut backwards to how I am planning on installing it. Chris Schwarz's book and the actual countersinks in the casting itself suggest it is fine the other way, and that seems like much less work.)
So here are my main questions. Help on any of them would be appreciated.
Thanks for reading!
I have a Yost 18" vise screw and the screw major diameter is about 1.163". (The picture shows the nut backwards to how I am planning on installing it. Chris Schwarz's book and the actual countersinks in the casting itself suggest it is fine the other way, and that seems like much less work.)
So here are my main questions. Help on any of them would be appreciated.
- Does the screw ever touch the wall of the leg hole in use? Does the screw rest on the bottom of the hole? Or is it just supported by the nut on the back of the leg & never touches the leg hole? (I see some hardware has a bushing or sleeve bearing type thing on the front of the leg but I don't have one of those --- if it's critical I guess I could make one out of delrin or UHMW or something?)
- If the screw never touches the leg hole and the nut is supporting it, is it normal that the screw sags a small amount from true horizontal when it's open because of the clearances in the threads in the nut vs the screw?
- Does the screw ever touch the wall of the hole in the chop? (I am pretty sure the answer here is "no")
- Does the parallel guide ever touch the top/bottom walls of the mortise in the leg in use? Am I supposed to tweak it until that never happens?
Thanks for reading!