So I have done many infusions and they most of the time went ok.
only problem I had was because of heat the parts started getting some rpint though ( bike and car parts)

So I now wanted to post cure my parts in mould so it wont get print through anymore after its clearcoated and put on the bike or car.

I always use IN2 Epoxy Infusion Resin with fast harder or mixed fast and slow.

I got perfect vacuum droptested over night.
after part was infused I had the vacuum on until the resin was gelled up.
Got the part sitting 48H in room temp no signs of air in infusion mesh or anything.
than I had it in my oven for 3H at 40°C 

let it get to room temp and the part has print throug

mould was postcure to 90°C
and stil got mirror finish on it. 

Go for the post cure above and you should be fine.   Remember also if its slow hardener, it can take 30 hours at 20C to cure and this time of year, if it cools over night, much longer.  So it is possible its a bit green and the heat then softens it a bit too much giving the print. 

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant