Studied plans Went to Home Depot and bought Lincoln Electric K1170 AC225S Stick Welder (for steel jigs). Ordered blue Pilot pens and marker gauge from Amazon Empannage parts should be here Nov2!
Cheap welder. I'll have to make a rolling cart and extension cord for it.
$10 digital caliper. Seem like it should actually work well.
Marker gauge. I'll replace the nail with a marker pen to make a good tool for marking rivet times.