If the aluminum frame is homemade and not heat treated, it is only good for display..
If it is too fugly or fubbedup to use it is worth around 70cent to a buck a pound..
I know of at least 2 frames it town here that were not heat treated, and both builders admitted in they end they were a waste of time.
Another builder here in town, heat treated his, but later on decided to stop production..
Simple reason.. someone welds a tab on the frame or mods it, there is a weakening problem, in the end, his name is involved, even if it has nothing to do with him..
Lets me say, an aluminum frame of unknown origin, that you cannot find provenance for... is just a wall hanger or display piece... better off with a nicleplare Rickman, Seeley, or one of the others..