Your experiment with the squares and T joints is interesting. Can some kind of heat shunt be used to reduce the warping? If so can you do a video showing how that can be done?
I think a video doing more testing to reduce the warping is interesting. I think it would be helpful for everyone.
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Agreed. Always up to find out better ways to control a weldment.
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It just seems logical that raw resistence force should hold things once they cool.
I love de soft crack of fresh welds…
I’d be curious to see a comparison between TIG and MIG using IR imaging and measured deflection of identical weldments.
The use of chill bars (typically copper or aluminum, sometimes liquid cooled setups, even heat stop pastes like Cool Blue) can help manage the heat expansion, and cooling more evenly.
The plastic component to distortion can generally be overcome with clamping and fixturing. However, distortion has an elastic component that clamping doesn’t alleviate. Think of like residual stresses, once the clamps are removed the “elastic” band returns. This elastic band is like springback on a bent tube. I believe it’s from the molecular bonds between the atoms.