I've been looking for a wooden soap mold and discovered on eBay that there are plastic molds claiming to be for cp soap making. They are described as cutting-board like, food grade plastic with no liner required. A wooden lid is also included. Could the plastic molds cause the soap to over heat? Would it be the same with the decorative, single plastic soap molds? One final question, if going with a wooden mold is it better to use the rectangle trough shape that seems simpler for cutting or the cube shape which requires more cutting but perhaps retains heat better?
Thank you,
Krista