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					Originally Posted by guccilvr
					
				 my grandma has one that still works.. I think she got it during her hippy days.. it still makes great formations and everything..although it does seem to take a little longer to actually heat up now.. | 
	
 I would imagine that the heating is unrelated to the contents of the glass and you would be able to replace the heating bulb (which is a standard bulb, I believe).