I am pretty sure it is an illusion actually as the vise was closer to the camera than the grinder. But not much of one since the grinder is not that big.That is good, It it an optical illusion or is that thing truly the size of your grinder.
The threaded rod was originally part of the extraction system on an old HPM 350 ton injection molding press. It was basically secured to the main hydraulic cylinder housing and threaded out to the proper distance to contact what was called the 'butterfly' positioned in a slot in the main hydraulic ram as a positive stop.Great build,
What are the details on the all thread?