Originally Posted by extanker59  Do you find any movement in the center jaws? |
It's interesting that you bring that up. For these to perform correctly, all of the indexing has to be done from the center jaw. That puts a lot of load on a jaw that basically has aluminum locating pins (the pins are essentially bosses machined into the jaws). Unlike a Kurt, it's not a solid part of the vise base. While I don't have any experience with them moving, I'd bet that they aren't great for really rough machining loads.
I suppose that jaws could be made to use reamed holes and driven, ground pins instead of the aluminum bosses.
Were you guys having problems in just one direction (inline with the vise base) or did you suspect that they were shifting in all directions, blowing all of the XY dimensions?