All you have to do is the fitting. I held most of
my pieces in place with duct tape and JB weld then brought them to the
welder. Do it in stages and the shrinking from the welding will have a
minimal effect.
my welder has me tack pieces together with a hot
glue gun. he then tack welds it and peals off the hot glue, which leaves
no residue and peals off easily. duct tape leaves a residue, plus gets
in the way.
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