Hello, 
I am currently producing an infused complex carbon fiber part with a clear gelcoat CRYSTIC GELCOAT 253PA by Scott Bader. After some testing we concluded that multiple very thin passes need to be applied to avoid the gelcoat from getting cloudy. This being said we have to rely on the gelcoat operators expertise and the part in particular is extremely difficult due to deep cavities. I was thinking about infusing the part without a gelcoat and then applying an automotive clear coat on the part as a solution.

What are your thoughts on this? Any suggestions for an in mould applicable clear gelcoat that would have good cohesion with epoxy and not get cloudy when exposed to the sun?
What does the automotive industry do to avoid this?

Thank you

Many of our customers go down the clear coat route where added UV protection is needed.   In mould Gelcoats can work with infusion and do have their place but in our experience, simpler flat panels are generally more successful at getting a even coat using a cup gun than the more complex shapes.  

Many good quality parts are infused without gelcoats and in temperate climates don't get even a lacquer coating as it is not needed.  Sunnier climes or parts likely to spend more time outdoors, the added UV protection of a good quality automotive clear coat can be beneficial.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant