It's a big relief to me to see that you've done your homework on
safety. When I saw where you said you'd nicked the steel with your
fingernail I really panicked...
Here's my only additional suggestion for now: If you're using rebar
for armatures for artwork I suggest you at least consider getting some
mild steel round stock. It is surprisingly cheap even though steel is
high. It is easy to heat and bend. If you weld it you can reliably
get it to stick together without potential problems.
Metinks it would be a pity for you to spend a lot of time on a
successful sculpture only to have it break apart at the welds. In
construction work, while welding sections of rebar is not unheard of,
it is discouraged. And where it is welded the codes call for a healthy
overlap, backup pieces, pre and post heat, as I understand it. I don't
mean to imply that I've read any of the codes.
But check on the availability of mild steel rounds. You'll get much
more reliable welds.
- posted 16 years ago