Anniedog said:
Bruce, I assure you I am NOT pulling your leg! I will try again to post a picture. The toggles will turn over, adjusted to just touch the piece I want to hold, but they will not "click" or "lock". I'm guessing I have still not figured out how to adjust them, but believe me I have tried until my mind begins turning to jelly!! Now I'm guessing I am using the wrong sized clamp. I think I've bothered you guys enough with this, but I WILL try again to post pictures. Thanks to all.
I was just funnin' ya there, hence the

. But the photo's you
posted might explain the problem. As has been posted it looks like
you've maxed out the threaded shaft with the bumper on it. They
lock basically like a Vise Grip locks. They won't, "Click" unless there's
some resistance on them. You need to adjust them so that the rubber
bumper contacts the workpiece a little before the handle is to the
end of it's travel. I have one on a jig I use with different thicknesses
of wood and while it's sort of a pain to get the adjustment just right,
once you play with the depth a couple of times it will lock right down.
As Bobj3 said in his reply, you might need to use a thinner fence that
the clamp in mounted to in order to have enough thread to adjust.
If you don't want to remount the clamp you might try replacing the
bolt that the rubber bumper is on with a longer bolt. I can't tell by
looking at your picture but the few clamps that I have just use a
regular hex head bolt and the rubber bumper just slips over the head.
If you change the thickness of the workpiece frequently you may want
to replace the upper nut or wing nut with a plastic jig knob. They're
readily available from most woodworking stores and even most
hardware stores and big box stores carry some too. Just thread
the knob over the end of the bolt and spin it down to where you
need it. Then tighten the wing nut on the bottom of the clamp
while holding the top knob. I found this a little easier anyway. Mine
use a 1/4 20 threaded bolt. Easy to find just about anywhere.
I guess it's possible that the clamps were manufactured so poorly that
they're impossible to use, (hence the reason for the sale on Ebay) but
I can't imagine any company making such junk that they don't even
work at all but I suppose that's a possibility too. And I'm sure I speak
for everyone when I say that questions are always welcome if you're
having trouble. Isn't that what this forum is for?
Bruce