How To Handle Large Undercuts In The Brush‑On Mold Making Process

Begin measuring out the mold rubber by measuring Part B, packing it thoroughly in a cup and level off the top. Now, Measure out an equal volume of Part A. Combine the material and mix thoroughly. To ensure even coverage, it is recommended that pigment be added to every other layer applied. Apply the first coat using a 'stipple' effect to apply a very thin layer. You can see examples below of incorrect levels of coverage for this step. Be sure to also create a wide flange at the base. Once the first coat has been thinly and evenly applied double check the model for thorough coverage.