Creating a Makeup Prosthetic Mold Using Shell Shock & Plasti Paste
Shell Shock® brushable plastic and Plasti-Paste® trowelable plastic can be used in combination to create a rigid, strong, inexpensive mold. A mold created from these materials is lightweight, very strong and can be used for casting platinum silicones directly.
This sequence outlines the construction of a mold to cast silicone f/x makeup appliances. The mold is based on a lifecasting of a model created with Body Double® lifecasting silicone rubber.
To view the casting, painting and application of a silicone prosthetic cast into this mold, CLICK HERE to view our how-to video.
1 - A Body Double® mold taken from an our model will be used, along with Shell Shock brushable plastic.
2 - The Shell Shock® Part A is measured out. (mix ratio is 1A:5B by weight).
3 - The Shell Shock® Part B is measured out. (mix ratio is 1A:5B by weight).
4 - The Shell Shock® is thoroughly mixed.
5 - A thin layer of Shell Shock® is stippled into the Body Double® silicone mold.
6 - Another layer of Shell Shock® is applied.
7 - Plasti-Paste® II trowelable resin is measured out (mix ratio is 41A:100B by weight)
8 - The Plasti-Paste® II is thoroughly mixed.
9 - The Plasti-Paste® II is applied to the Shell Shock® to add strength.
10 - Additional layers of Plasti-Paste® II is added until a 3/8'' thickness is achieved.
11 - The material is left to cure for 90 minutes.
12 - The casting is demolded.
13 - The edges of the casting are sanded smooth.
14 - The finished casting reflects perfect detail of our model.
15 - A zombie style appliances is sculpted on the casting using sulfur-free clay.
16 - A 'cutting edge' is sculpted around the appliance. This will provide thin edges when casting silicone into the mold.
17 - A registration indentation is drilled into the casting.
18 - Universal Mold Release® is applied over the entire surface.
19 - A thin layer of Shell Shock® is brushed on the sculpture and casting.
20 - Another layer of Shell Shock® is applied.
21 - Plasti-Paste® II is applied to a 3/8'' thickness.
22 - The mold is allowed to cure overnight for ultimate strength.
23 - The mold is removed form the baseboard.
24 - A small batch of Plasti-Paste® II is used to create a base for the mold.
25 - Any exposed clay is removed.
26 - The mold halves are slowly pried apart using screwdrivers.
27 - The mold halves are separated.
28 - Clay residue is removed using wooden tools.
29 - A vent hole is drilled in the positive (life casting) to help reduce air bubbles in cast silicone pieces.
30 - The mold is ready for use. To view the casting, painting and application of a silicone prosthetic cast into this mold, CLICK HERE to view our how-to video.