1444's First Fully TIG-Welded Frame

[Tristan Lall]

Do you have details on the alloys of the extrusions, plates and filler metal, and the heat treatment (if any)? I'm curious if there was explicit consideration of the reduction in temper of the alloy due to welding (heat-affected zone).

Also, let us know if there's any trouble fitting bearings into the machined holes, due to distortion in the welding process. Did you use jigs to ensure the gearboxes remain square? Or are you planning post-weld/post-heat-treatment finish machining?