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Warren (Staff) - 8/6/2018 10:50:11 AM

The simple way round any problems with wooden frames or boards is to brush apply a very thin layer of resin on as a sealing coat, then allow to cure and key up with sandpaper before going any further.  Seals the wood and prepares it for further resin application.

Mix 550-600ml to take into account mixing pot waste and you should be fine.

Also bear in mind that GlassCast 3 will cure to a rock hard finish, so any minor surface imperfections can be wet sanded out and re-polished back to a gloss., so you don't always need to flood coat the whole surface each time if its just the odd minor defect to repair.

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Warren (Staff) - 8/6/2018 8:39:19 AM

The pot life is 30 minutes at 25C, however the time it takes to "gel" is typically up to 10 hours.  If all your work is done within the 30 minutes then I would not expect any issues. 

In theory you should be able to work the resin much longer once the resin is on the art piece. This is because the pot life is determined in a pot, ie a large volume in one place, where the heat can build up easily.  Once spread out on a surface, the heat does not build up anywhere near as quick.  However, determining  the exact work time once it is on the  work piece is quite hard as it depends on how long it was in the pot for, the ambient temperature, the volume of resin (and hence how quick it built heat up), how thick its poured etc etc etc.  From personal experience On thinner sections, such as on canvas artwork, you might be able to get another 40 minutes or more once its poured.  When I did some thicker sections, like 10mm thick (before we had the GlassCast 10 and 50) It was pour it, and get any heat gun done within 20 minutes as it was going off by then.

Pitting can be either too thin layer or dirt/dust falling on it effecting surface tension.  You would want to be pouring about 1.6kg per square meter and that should just about settle with only a little dribbling down the sides.   Too much and the excess just runs off, too little and you tend to not get as level a surface  and the surface is prone to dents and dinks as the surface tension is effected by the surface of the art work.