Re: Made a screw earth clamp for welding

DoN. Nichols wrote: 
According to Christopher Tidy  <cdt22NOSPAM@xxxxxxxxxxxxxx>:

Ted Edwards wrote:

Christopher Tidy wrote: 


	[ ... ]


I don't like the idea of the solder. Solder tends to cold flow and gives way even faster around hot welding work. I suspect your connection between the contact block and the wire will deteriorate fairly quickly. I would suggest a crimp connector (properly crimped) on the wire bolted to the side of the contact block. Could you tap the hole the wire is in for said bolt?

It isn't actually soldered to the brass block. The solder just stiffens to end of the cable, and there are two grubscrews which clamp it tight. I copied the arrangement from my stinger, which seems to work fine. 


	Actually -- the solder increases the chances of flex failure
right at the point where the solder ends.

The main reason I used the solder was to fatten up the end of the 25 mm2 lead and keep it round. I wanted the option to use 35 mm2 lead at a later date if necessary. Perhaps I should have used longer set screws, but it would have made the clamp clumsier and 10 mm were what I had.

I'll use the clamp and see when the lead breaks. My guess is not soon. My stinger has this kind of connection (minus the solder) and it hasn't broken yet. Anyway, it's only five minutes work to fix when it does.

Chris

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