How To Recreate Wartime Ration Bars With Food Safe Silicone
Step 2: Dispensing, Mixing, and Vacuuming Smooth‑Sil
Smooth-Sil 940 is a 100:10 by weight mix ratio material. Part A of the silicone is weighed. Then part B of the Smooth-Sil is weighed out as well. The material is mixed thoroughly. Once an even mix is achieved, the material can be vacuumed. The material is placed into a vacuum chamber and vacuumed until a level of 29 inches of mercury is achieved using a pump. The air in the material escapes as the material is vacuumed.
