Hazy GC50


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wochi
wochi
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Hi all,



i finished my first part today using GC50 gel coat. Poblem is that the part got hazy and on an yellowish side.
What could be the problem? I sprayed the mould with gel coat spraying gun, let it cure for about 4 hours (25º over here) and then epoxy infused. Into the oven, cured at 50º for 8h.
The primarly objective was to fill the pinholes that i allways get no matter how perfect is the insfusion, and that resulted very well! But when i look at the part compared with other with no gel coat is very noticable the difference. The yellow tone i can understand as beeing a polyester gel coat. But the haze is a big problem.
Any ideas for the cause of this?

Thank you!
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Warren (Staff)
Warren (Staff)
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It depends on your compressor but you are wanting to be between 60-100PSI using the standard nozzle as supplied.

Hold the gun approximately 50cm from the surface and use a gentle sweeping action across the mould.

You will probably need to adjust the pressure to suit your compressor as they are all slightly different.  We would recommend a practice on a scrap panel of some kind to help you get the "feel" of the gun and get an even coverage.

In terms of usage you will use 3-400g per square meter for a typical coverage of 0.3-0.4mm, however you will need to mix approximately 500g for each square meter to cover wastage.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant
GO

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