I have bought "parts machines" before. The problem is I can't bring myself to part them out. I even feel guilty buying parts online knowing they where stripped from a machine I might have gotten to sew again. Here is a parts machine I bought not long ago.
[ATTACH=CONFIG]620077[/ATTACH]
[ATTACH=CONFIG]620078[/ATTACH][ATTACH=CONFIG]620079[/ATTACH]
As bad as this looks it is now a working sewing machine. Every thing cleaned up in a bucket of evapo-rust including the shuttle and bobbin inside. The bobbing thread could not be saved. The only part I couldn't repair was one spring on the bobbin winder. It will still wind a bobbin even with the bent spring it just needs to be nursed along.