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Hi Brian. If you're making "T" ribs for a tube, it should be fairly easy to
make a bench-top jig and the 1/4" "T" part can be bent by hand and clamped in
place using vise grips or "C" clamps.
Make sure you bevel the web portion to get a 100% weld. Use lots of small
"tacks" when bending.
Remember that the ribs will distort a little when you weld them so a little
trimming is required with a small grinder to maintain a good fit-up.
Are you using the AS516-GR70 steel ? It's been cold here lately and you
should pre-heat the steel before welding it.
I have a propane heat torch I bought for about $100 and use it for
pre-heating steel. It's the kind roofers use for laying comp roofs. It works
good for melting lead too. ( Wear a respirator )
Frank D.
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