There is a guy in my area who recycles road bike frames into recumbents. He'll cut the frame tubes and joints into whatever configuration works for him, then make a complete bike out of them. He picks which tubes and joints he's going to save, brazes them together, sands them, paints them, adds everything else needed (wheels, components, bars, saddle, etc.) and makes a pretty nice product. Not an amateur attempt, this guy knows what he's doing.

He's not looking to pay more than $10-20 for a frame and fork because he's essentially doing everything from scratch. I've sold him single frames and a bunch of frames on different occasions.