I too have seen it a various trade shows David & like you, did not take too good a look, just thought to myself ........" Yet another wonder product "
Being the eternal pessimist that I am. My gut instinct tells me that a weld made at such a low temp will not be suitable for a potential high stess app
If you have a decent heat source availalable, I would stick to the more traditional filler rod & flux route.
I would love to be proved wrong........... Like I said......I have seen the product but never used it
