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Bubbles are one of the biggest issues we hear about Casting Resin.
Porous, organic materials like wood, leaves, fabric and even some soft, lower quality papers contain air and moisture, which they absorb and emit depending on the climate. These materials will continue to "breathe" ... releasing air even after being covered with resin. This is called off-gassing and it results in air bubbles in the resin, sometimes hours after you have poured and torched.
To help prevent this, you need to pre-seal your work, prior to resining.
You may still get a bubble or two ( in which case you will need to sand down your piece and apply another coat ) but pre-sealing can greatly help to minimize bubbles.
See Mini Instruction here.
Very impressed with the resin I get from this company, it works well and quite easy and simple to use. Totally recommend them.
The moulds were easy to use, just remember to squidge the chess pieces before fully filling them to help prevent bubbles getting trapped. The tricky part of the board was pouring enough to fill the square but not so much it spilled over! Would be great if the chess pieces moulds came with more than just 1 pawn as it is going to take a while to complete.
