I want to polish a BG4000 platter – that’s the heavy one, with the stroboscope markings on the underside. I can’t figure out how to SEPARATE the lightweight shiny top portion, from the heavy dull bottom portion, in order to remove the plastic ribs.
BTW – This BG4000 platter is the identical platter found on the Early BG4002 models with the AC motor.
Based upon Beolover’s sample, that separation was caused by force. Note that there is thin film residue to the old bond indicating that a shear force will likely be more successful than heat softening. This would call for a non-marring mallet with the platter supported thru the center hole. You could also try a .1mm stainless steel spudger to work around the edge to break the bond.