Problem releasing E C Fibreglass polyester gel coat from Unimold


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Bonobo
Bonobo
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Hi,

I made my mould using the unimold system starting with black tooling gel coat, after polishing the mould I applied 5 coats of easy-lease.

I thought I should test a small amount of the gel coat I intend to use on the mould first (e c fibreglass polyester) info here

I'm glad i did the test because it won't release at all. I also mixed up a small amount of Easy composites general laminating polyester resin to test on the mould,
this released fine!

is there any reason why the EC Fibreglass polyester gel coat wouldn't work?
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FLD
FLD
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I use that gelcoat.  I have found that I need to use 10-12 coats of easylease to get a good release (things fall out of moulds at this level).  If I use the 6 coats as recomended on the can things stick quite badly.

Could it be that at 5 coats you dont quite have a sufficient coverage so that the gel has found a patch it can stick to whereas the laminating resin found a fully covered area of the mould?
GO

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