Good morning,

I tried to seal a wooden master part with a view to then creating a vac-cast mould.
It was a disaster - the wooden part totally got stuck and was destroyed when I opened the set mould..
Can anyone suggest the best way to seal a plywood master, so that it can withstand the moulding process.
I previously used about 10 coats of Mirror glaze on a very smooth wooden surface and thought this would do the trick...but no.
Thanks,
Adam