This Instructable will walk you through the process of creating a 2-part brush-on mold of an original.
2-part brush-on molds are ideal for replicating complex shapes that would otherwise be impossible with a pour (block) mold or glove mold. Using a brush-on technique gives the silicone more flex when demolding and require less silicone than pour molds. Splitting the mold into two parts can allow you to work around undercuts in a mold.
Note that you can add more than one mold part line, however this will increase the complexity of your mold.
In this Instructable I will be making a mold of a clay original that I sculpted and then creating a slush casting using the mold.
Materials I used include:
- non-sulfur oil based clay (6 lbs)
- clay tools
- dragon skin 20 silicone (2x trial kits)
- plasti paste mothermold
- mixing containers (x20)
- brushes (x2)
- stirring sticks (x20)
- gloves (a lot)
- smoothcast 300 (1x trial kit)
- mold release
- wing nuts
- 1/8th MDF board
- sewing tape measure