If you choose to do this, this guide will give you more than enough confidence to get going. And best of all you could build one yourself! Many experts recommend buying an old chopper or cruiser, even one that doesn't work, as a first project, because then you'll have most of the bits, and you know that they'll fit. Knowledge is power, as Francis Bacon said, and this site will put you in a position to ask the right questions and to talk intelligently about a how a frame is built and how the work that goes into preparation, fabrication, and assembly. Of course it's pretty interesting to know how chopper frames are built, and in theory it's pretty easy.