I have been successful on the thin stuff by scoring the inside of the bend with a cut off wheel (straightedge guide,of course) and using the clamp n edge assembly to bend it. then I weld the inside corner, which will be hidden,to beef it up.hadn't tried this method,but i' give it a whirl next time the situation comes up. nicely written,by the way.
with 30 years exp welding behind me, anyone who tries that 'fill trick' on code or critical structure should be fired and have his hood confiscated
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you're welcome! glad it helped you out.
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