[Jewelry making - Article 01171] - Re: [Orchid] Debubblizing RTV mould compound

[Sandor Cser]

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Russell,

    mixing silicone components in a vacuum mixing bowl will avoid
    formation of air bubbles in the liquid RTV. Getting rid of trapped
    air bubbles sticking to the object requires some practice. Evacuation
    of the mold with slight agitation, e.g. vibrating plate after pouring
    is a good remedy in most cases. Tricky situations may be treated
    successfully with curing under pressure (after evacuation) in a
    suitable pot.

Sandor Cser,
Ti-Research
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