Remember- the word in

Posted by Charlie Jones on Dec 2, 2004

there is "balloons". That means they are hollow. If you apply them, then sand, you are opening some of those balloons.

You really should roll on a thin cover coat of epoxy after you fair to seal them. The primer might serve, but I would never leave sanded micro balloons open.

In Response to: Shop tip: micro-balloons by jahrome on Dec 1, 2004