From my expierience I pour the mold @ halfway full and slush coat the entire inside then poor it out. Mist some water all over the inside and refill halfway again and slush coat again. This lowers the chances of bubbles. After two slushes I fill the mold up and let it dwell 1- 2 hours. Now, all this depends on the latex you have, the outside temp and humidity, and the mold material. Trial and error or read the paperwork on the latex and see how it reacts.