I agree with RevRuss I love the new rubber handles over the maple ones. One my hands are a xxxl and it fits just great. Yes, I too have noticed that the wooden handle f style clamps are harder to undo. I don’t really have an answer to that. It could be one or a combination of the things you stated RevRuss. Ive had the pleasure of owning many different manufacturer of clamps and I love jorgensen. Now, Bessy has larger handles than the jorgensen maples. I have four 12" Bessy F style but got them for a steal at the Milwaukee wood show For $7.00 now at that price ill buy them. But for the majority jorgensen all the way. At some point I’ll sell all my odd balls.
Jeff Vandenberg aka "Woodsconsin"