I've been building my first plug for the air conditioning housing on my Marcos Mantula. While I'm quite happy with the way it has turned out in general I am finding the application of the pattern coat primer to be more difficult than shown in the Easy Composites video. I've tried using a brush and a roller, but can't seem to get to the stage where it only needs minor sanding. There always seems to be new imperfections with each coat.

No, I haven't, 'though considering getting one at the moment to try some clear-coating. I'd have like to have tried the Duratec Sunshield I've seen you mention a few times, but struggling to find it here in the UK

It sounds like this type of gun might work well for applying the in-mould coating on some of the smaller moulds as well, so I might try on those

Cheers