Serge,
The usual cause of small bubbles in the epoxy is rapid stirring the resin and
hardener. For most wet lay up work this is not a problem. You will be
smoothing out with a squeegee and that will get rid of the bubbles. In the
certified industry we put the lay up under vacuum and that sucks out the air.
If you have a small vacuum chamber, you can put the cup of mixed epoxy under
vacuum for a minute. That will get rid of the bubbles also. One hazard with
entrained air bubbles is when you glue solid pieces together. The air gets
trapped in the glue joint and you can have slightly less bonded area in the
joint.
Sid Wood, KR-2 N6242
Mechanicsville, MD USA
