At 08:45 AM 7/9/2006, you wrote:
>One point that may need watching in these environmentally sensitive, PC
>days. Anything with cadmium that could possibly leach into the ground/
>ground water over here is a positive 'no-no'. It's very difficult over
>here to even get passivated cadmium plated screws - they're all bright
>zinc plate now. Silver solder, especially the cadmium free varities get
>around this
I don't think Cadweld (tm) exothermic welding has any Cadmium in it. It's
a mixture of copper oxide and aluminum powder (i.e. thermite) in a ceramic
crucible.
The name comes from the inventor: Charles Cadwell
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