How do I get air bubbles out of a 50/50 mix of
micro ballons and West Systems epoxy?

Paul Lamar

Paul,
     I race sail boats so I buy Micro by the 5 or 10 # bag for fairing the
hulls.

I hand mix all of the micro. I never get bubbles unless I vigorously mix the
epoxy and micro or if the temperature of the resin is on the low side making
it very thick.

A more gentle mixing action with resin at about 75 Degrees in a likewise warm
room should give you a mix without bubbles. I would also watch how you apply
the mix. This can also be a source of bubbles if you do not use deliberate and
controlled strokes with the squeegee.

When I get bubbles, the only way to get a good surface is to drill into the
bubble so that a shallow cone is created. Another application of a slightly
more fluid mix gets most of the problems. I just keep doing it until there are
no more holes.

Hope this helps a little.

Sincerely,

Wally- 

Thanks. Best solution so far. I do believe I am stirring too vigorously and it
has been rather cool at the hanger lately.

Paul Lamar

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