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umahunter
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Ok I made up a jig to get a perfect 20 degree scarf joint. I ground it on rougher grit paper to give tooth. I cleaned with acetone.i used 56 percent silver solder bought on ebay and harris silver solder flux. I wrapped in fiberglass cloth immediately so it cools slower .sanded smooth.i seemed to get good penitration between the two halves. I mounted the blade and tensioned all was good I cut a piece of 2 inch round aluminum. And some 3/4 aluminum square and it cut great then about an hour later i hear pop and the blade broke at the joint. What I'm wondering is when setting up the blade to solder should I leave a lil bit of a gap so there's more solder ??? Any other tips only other thing I can think is the solder i got isn't really 56 % but the guy had all good reviews or I put the pieces to close together thanks for any tips