A better tool for getting the trapped air out is a Bristle Roller as they are much more effective than flat and finned rollers. After wetting out each layer of reinforcement with resin, use the roller with a medium pressure over the entire laminate, for the first layer in a cosmetic carbon fibre part we recommend that the entire area has had at least 5 strokes to eliminate the small entrapped air bubbles.After use rinse the roller in an acetone bucket and leave it submersed until the next use, ensure that the acetone is thoroughly shaken out before each use. If cleaned properly a roller can last many months of daily use.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant