I recently noticed that Harbor Freight has 6" quick-release bar clamps for $2.99, 12" clamps for $3.99 and the 18" clamps are $4.49. Here is the link:
http://www.harborfreight.com/6-inch-...amp-96210.html
I need some 6", 12" and 18" clamps so I will check them out at the store today. The only negative reviews were concerning the handle starting to rotate on the threaded shaft. I am on a very tight budget right now and I can pin the handleeasily if need be. Other people have done that and the rest of the clamp seems to work OK. I realize the steel rod isn't going to be as strong as a name brand clamp, but I will check to see if the bending is reasonable or if it renders it unusable. Since I need a bunch of them, the savings add up real fast.
Steve