How To Reproduce a Sea Sponge using Liquid Plastic
Step 5: Casting with Smooth‑Cast 325 and So‑Strong
Apply tape around the mold to hold the cut seams together to prevent leaking of the liquid resin during casting.
Smooth-Cast 325 COLORMATCH is used to make the casting. It has a 1 part A to 1 part B by volume mix ratio. Dispense equal parts of A and B. SO-Strong Color Tints are used to pigment the resin. Adding SO-Strong white to your translucent resin will make it opaque. Mix the tints until there are no color streaks.
Pour the resin into the lowest part of the mold in a long, thin stream. Allow the resin to cure for at least 10 minutes.
