Did a casting using filled epoxy into an aluminium mould. Used plenty of coats of Easy-Lease but it was well and truly stuck and had to chisel / grind it out. A few queries if I may : Has Easy-Lease got a shelf life ? This was several years old. Because it was cold and I was in a hurry I used a hairdryer to speed it up - and I didnt leave it for an hour before casting - wish I had now. Should I persist with Easy-Lease (is it suitable for aluminium) or swap to PVA ?