Has anyone had a problem with their jiffy clamps failing? I seem to be getting inconsistent registration and one of them seems loose (not how it's attached to the table but still wiggles. I've had them for about eight years. Any ideas?
I've seen them get tired, yep. If they are the softer metal type (aluminum, not steel) they can get slightly bent out of shape, and I've seen the clamp-head itself kind of round out so that the actual clamping contact area is one small point, rather than two flat-to-flat (clamp to screen frame) planes making good overall contact.
They're cheap enough, I'd just buy another set. Way less of a headache.
It was all over the place. I happened to have a 40% off coupon at Dick Blick so I was able to pick new ones for like $14. They are the same ones that I had, but those things lasted for 8 years, which in my book is not so bad.