Talk Composites - The Forum for Advanced Composites

Dry areas appearing when using GC50

http://www.talkcomposites.com/Topic17698.aspx

By MarkMK - 6/5/2015 11:07:53 PM

Hi all
A couple of recently infused parts have demoulded with small dry areas of crazing on the part surface. I'd sprayed GC50 into the mould first, left overnight and infused the next morning.In both cases full vac was achieved and drop-tested for 30 mins before infusion
All other aspects of the process were adhered to carefully. If there was anything amiss I'd have expected to see any blemishes to appear below the outer gelcoat surface so was puzzled by the surface imperfections
Could it perhaps mean that I need to apply the gelcoat a little more thickly, as I'm usually concious of not spraying too much and creating sags or uneveness that might affect the appearance of the cured fabric. 
Thanks
Mark
By MarkMK - 6/9/2015 2:59:20 PM

Doh! That'll teach me to pay closer attention. Thanks gents, glad I raised it now rather than just going round in circles looking for an solution Smile