I fixed the audio issues of this video at: http://youtu.be/QNEoQ8zKrOw My book is at: http://JEMTOY.com ~ Every mold has quirks. Some cast well just sitting there, while other molds have to be jiggled, shaken, or moved around in order to get the resin into the trouble areas. Air bubbles can cause problems if your original design does not flow all in one direction with gravity. Here I cast Smooth-Cast 300 urethane resin into several Glove Molds, Putty Molds, and Two Piece Block Molds. All this and more is explained in my illustrated book, How To Make Resin Toys by J.E.Moores available at: http://jemtoy.com/tag/how-to/