I made a pretty good teardrop shaped frame with essentially 4 cuts and one braze joint, i wonder if anyone else has done this? starting with a twin top tube "mixte" or "mixie" road bike from early '80s, i cut off the top rear triangle, cut the downtube near the BB, then heated and bent the front end into some nice curves untill I had raised my bb enough to run with 20 in wheels, then had the bb/ downtube joint re- fillet brazed, and I had people asking "what kind of 70s chopper frame is that?"