It really depends on what your plug is made from and what you have used as the final finish coat on the plug Resin, 2K Primer etc. If you are confident about the bond between the plug base material and the finish coat then Easy Lease should be fine. Having said that there is nothing wrong with some extra security. I sometimes wax after applying Easy Lease just to be sure particularly if it is a high value item like a car bonnet that I am moulding from. The downside is that you will probably have to spend a little more time bringing the mould up to a high gloss after de-moulding.

Carbon Copies Ltd