Need help for shim in Tweco work clamp !

[Cr2348455]

Hi everyone,
I need a copper shim to fit at the bottom of the cable inside the Tweco CC 300 Junior work clamp I got from Ebay, to replace my old work clamp.
How thick does it need to be ?
This goes on the opposite side of bolt hold down.
any help greatly appreciated
J

 

[cathead]

Thick enough so that you can tighten the screw without it bottoming out with the wire installed....

 

[Cr2348455]

I split 1/2" copper pipe union , but seemed to thick.
I need a narrow piece with some flexibility to be able to get it seated without having to mess with that metal crimp.

 

[Cr2348455]

Thick enough so that you can tighten the screw without it bottoming out with the wire installed....

Thanks
Would not the wire itself prevent the screw from bottoming out ?
Does this shim need to go halfway around the cable, like a cradle ?
The screw has a nice round smooth bottom.
Thank you

 

[markba633csi]

Maybe just a half-portion of the copper tubing? Just to help cradle the wire and keep the strands together
-M

 

[cathead]

Or maybe even a full cylinder of copper tubing(of the right size of course)
slipped over the wire and then squashed down would work for you. Actually your old
clamp looks salvagable to me.

 

[Cr2348455]

Thanks
Is there a fix for the spring?
It does not allow enough opening by squeezing the handles.
I always need to use the leverage of the clamps bottom jaw and the corner of my welding table, which is fairly thin. It is just a 150.00 portable table.
Thanks

 

[markba633csi]

I see what you mean about the spring- design oversight
They put a more modern spring in the new version
-M

 

[Cr2348455]

Thanks,
Not sure of the age of the used like new one I got from Ebay, but it certainly looks a lot newer than my original. Hoping this spring lasts, I never notice the work clamp getting hot, but I usually run 5/32" 7018 at 170-180 amps, never anywhere near the maximum output of the Dialarc hf.

 

[Buffalo21]

I usually cut a piece of copper tubing, split it, wrap it around the wire, then bolt it into the clamp.