My design for a Mk8 silicone sock injection mold. Uses a syringe w/ catheter tip to put the silicone into the mold. The tolerances are tight to help minimize leaks.

I like using Dragon Skin 10NV to cast. Will need approximately 20g of silicone not accounting for overage.

Materials: Silicone, syringe w/ catheter tip, release agent, 4 #4x.5" wood screws

Apply the release agent, assembly the mold, screw together, prepare the silicone, inject silicone and wait the manufacturers cure time to de-mold. Tabs have been added to help pop the mold apart.