Quote:
Originally Posted by swamp rat
whats a good gap to maintain before tack welding? 1/16"?? or less? I have the Harbor freight version of the butt weld clamps but thought maybe the gap required by them may be a little too wide?
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I've got a few that are HF vintage also. Regardless, all my blades are .040", but your gap should be a bit wider or it makes it tough to get the blade out after the weld shrinks. I prefer gaps to be no more than 1/16" but I've welded wider ones than that. No matter how wide the gap is, go slow, skip around to minimize the heat and if you see a crown or a sinkhole developing, stop and hammer the area flat before proceeding.