"John R. Carroll" wrote in message
...

"Ignoramus8051" wrote in message
...
I have a question about "heavy duty C clamps". By these, I do not mean
regular clamps, but ones with extremely thick (in relation to their
length) bodies. They are much heavier than would be required to simply
hold some parts together to be welded, or worked on. Those must have
some special uses, and I cannot think of any.

Examples

https://www.armstrongtools.com/catal...p?groupID=1096

The one below is the one I am looking at (cleaned up one today), it
seems to be a poor man's press:

http://www.drillspot.com/products/33...y_Duty_C_Clamp

With the load capacity of 27,500 lbs, it can develop 12 ton force.

Who would need that in a clamp?

Lifting steel plates and bars as well as flipping them over with chains
and a hoist.


Have you ever needed one?

Yes, but they are still dangerous as hell. I only used the things enough
to get handling holes drilled and tapped.

JC

No one I know would use such an expensive clamp to lift with when a plate
clamp is so much cheaper, safer, and dependable. They must have other uses.
Personally, I have used big C clamps to draw plates together. You weld dogs
onto the plate to clamp the steel. Have also used cut wedges and L shaped
dogs.

Steve