Good day,
 after using GC50 , the product looks a bit foggy ,, its like this ? Or i have done some mistake in the process,
( i am using 2% catalyst from local market ).  Photo no-1 is without gelcoat ,, photo no-2 is with GC50 and you can feel the deference !
please advice what to do ? Thanks.

 

You do lose a little bit of clarity when using GC50, so this is quite normal and is mainly down to the fact that, even with a fairly good spraying technique, the surface that you'll be laying your fabric on will be less 'flat' on a micro level, so there will be some visual distortion

It shouldn't be sprayed too heavily, though, as this can lead to a slightly milky appearance, but you should expect a little less clarity overall when compared to parts produced with no in-mould coating

The benefits of using it, however, are worth it in many instances