This is the part from an old VCR which can be used to make the Scratcher. It is actually the capstan motor. The grey metal circular piece can be removed, and this is shown in the photo below. There are coils under this piece, and the grey circular spindle has a large flat magnet in it. So....if one spins this circular piece a small voltage is generated in the coils ! Hook these coils up to an amplifier and instant rapper music.

This is the part with the platter removed.

This is a photo showing how the Assembly was mounted on a wood base. The shaft of the platter goes through a hole in the base.

This is a photo with the platter removed.