[rob12763]

Wombat tree the injection molds GW and other plastics companies use are filled with molten plastic that cools and hardens not a mix of resins and hardeners.Listen to Chrome dog,once your molds are made and vents cut and you made a good cast or two then it gets faster as your experiance grows.I like the translucent rubbers as they let you see the part and also if your resin is filled.Rob