By Asurada - 4/18/2019 6:16:55 AM
Hello everyone, I recently made some things with glasscast10 resin, I want to make 0 bubbles of transparent resin parts. In the use of found a very troublesome thing, glasscast10 in the mixing, it is difficult to eliminate the bubbles in the resin, I used the vacuum degassing and hot air gun heating way to eliminate bubbles, but it is difficult to eliminate the bubbles in the resin. At first I thought the vacuum degasification way is the most ideal way to eliminate bubbles, but glasscast10 in the vacuum degasification process, there will be a lot of small bubbles, more than the appearance of non-degasification bubbles, this is what reason? The following photo is a workpiece I just made out of a degasification method.Hello everyone, I recently made some things with glasscast10 resin, I want to make 0 bubbles of transparent resin parts. In the use of found a very troublesome thing, glasscast10 in the mixing, it is difficult to eliminate the bubbles in the resin, I used the vacuum degassing and hot air gun heating way to eliminate bubbles, but it is difficult to eliminate the bubbles in the resin. At first I thought the vacuum degasification way is the most ideal way to eliminate bubbles, but glasscast10 in the vacuum degasification process, there will be a lot of small bubbles, more than the appearance of non-degasification bubbles, this is what reason?
Thickness:20mm
Then I tried vacuum degassing and hot air gun two methods together to defoaming, but I probably use hot air gun repeatedly to blow to the heating used four or five times to be able, basically I recognize the bubble elimination of almost, with the hand touch silicone mold will feel the resin has become hot, in a period of time the resin has begun to gel. It's ideal to do this, but there are still a few bubbles. Shown in the following figure.
Thickness:30mm
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By Rich (Staff) - 4/21/2019 12:04:45 PM
Hi Asurada,
Are you pouring these in one go or building up layers? GlassCast10 is limited to 10mm per layer to avoid excessive exotherming during the cure - exceeding 10mm will decrease the curing time significantly and could well result in air entrapment as the resin gels too quickly and thus the air is not emitted efficiently. This coupled with you high working temperatures is likely the cause of the issue.
You may be better with the slower GlassCast50. and working at 20-25'C.
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