Thx for the video. I don't think the jorgensen would be a problem but the harbor freight I bought years ago have binding issues. I'll try it on them and see if it helps. Need to get the dust of them anyway....thx
They have had all of the "duty" that I ever needed. You have to remember that the object is to get the objects together, not crush them.
If you have watched Paul Sellers Videos, you will see him occasionally clamp the aluminum bar section into a vise, then he will use the clamp to hold an item perpendicular to the vise (very handy without damage to the clamp). By adding the wood inside the clamp, it makes it a performer... from what would be considered a flimsy clamp, and yet still lightweight.