I did a third coat Glass Craft 3 on my first resin piece (800 x 400) last night and I checked it two hours later and was looking good - this morning it has several pits.

I did lots of preparation , I sanded it down to a flat smooth surface with a random orbital sander. I cleaned the surface many times , dried and blew it over with canned air. I washed it with acetone and made sure it was very dry. It was levelled out and pre heated before I did the pour. All the temps looked good and I made a cardboard box to cover it after the pour and I get this result. I am thinking that I have to change my brand of resin.

Simply can't carry on getting these results.

How deep are the pits? you can get pits from dust settling on the surface.

Also, if you coat the resin too thin, the surface will not be very smooth, it tends to pull and get dips and lumps  when too thin. 

Try and keep the room dust free as much as possible  (or cover the part) and pour it so it is a minimum of around 1..5mm thick which is about 1.5kg per metre square.


Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant