Do I need a release agent?


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jamesw
jamesw
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This is probably a silly question, but to use the unimould system on a epoxy coating resin finished plug, do I need to use a release agent before putting down the first tooling coat?

Thanks,
James
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Dennis G
Dennis G
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The finish is 2k primer over body filler. So it "should" have a good bond. I did find out what happens when you don't have a good bond between the underlying materials. I had the plug finished and pulled a fiberglass part from the plug to use so I could fit and trim it to the car. I figure when the final C/F part is made it should fit inside the fiberglass part and I can transfer how it is cut to fit so I don't wreck the C/F piece. 

When I prepped the plug I used wax then I used easylease on the part....guess that was wrong. I was thinking this was the correct order because if you use PVA you wax first then put the PVA on. I was thinking the Easylease just replaced the PVA. The part did release fairly easy but the underling materials peeled. I had to peel it off completly and start the finishing again. I think I would have been ok if I would have made the mold from the plug instead of a fiberglass part. even though it would have peeled and wrecked the plug I don't care about the plug once the mold is made.

Dennis
Matt (Staff)
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Hi Dennis,

Mmmm, yes, the sequence if you use Easy-Lease and wax together is very importantly  Easy-Lease first, wax second. If you do it the other way round the Easy-Lease will effectively remove the wax but at the same time contaminate the Easy-Lease so you've got neather a was or a chemical release agent barrier. In the correct order there is no reason why the release shouldn't be perfect, leaving both the pattern and the mould as they were.

--Matt

Matt Statham
Easy Composites / Carbon Mods - Technical Sales
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