My parts are pre-releasing. What can I do?
Pre-releasing is another issue that has many contributing factors. Mold design, laminate schedule, resin formulation, gel coat formulation, improperly calibrated spray equipment, gel coat cure time, under or over catalization, shop temperature, humidity, and external heat sources – to name a few – can all lead to pre-release. Most semi-permanent mold releases have a lower surface coefficient of friction than conventional paste waxes, which is why they are more often implicated in pre-release. If all factors other than mold release have been addressed, you may be able to reduce the incidence of pre-release by lightly wiping areas where the mold is pre-releasing with a high quality mold cleaner to slightly alter the surface tension.