Conduit and head tubes
I started this on Tuesday around 11. Used a HF tubing roller, welder, assorted HF grinders, flap wheels, and files. Used the headtube and fork from my old Giant motorized bicycle (my avatar bike) and the rear triangle from a dumpster find. Mostly finished it today. I still need to shape the deck and attach a red metal toolbox I found to house the batteries and speed control. And paint it... flat black ($2.49, SPARR Building and Feed). Very smooth ride and quiet!