How To Cast a Custom Scenery For a Model Railroad
Step 4: Preparing Mold for Smooth‑Cast 320 Casting
Once you have demolded the original model, the mold is powder coated using talc. The casting will cure perfectly dry with a matte finish.
Smooth-Cast® 320 casting resin, parts A and B, are measured out in equal amounts. Brown So-Strong® Color Tint is added to Smooth-Cast® 320 Part B and is thoroughly pre-mixed. Once you have fully pre-mixed, Smooth-Cast® 320 Part A is combined with Part B. Both parts are mixed thoroughly for 90 seconds.
A syringe is used to extract mixed Smooth-Cast® 320 from mixing container. The low viscosity Smooth-Cast® 320 is injected into mold. The material fills the side mold vents, ensuring a bubble-free casting. Smooth-Cast® 320 is allowed to fully cure.
