How To Handle Large Undercuts In The Brush‑On Mold Making Process
Step 3: Applying Second Layer of Brush‑On 40
Allow the rubber to become 'tacky' (sticky to the touch, does not come off model). This should take about 30 minutes at room temperature. Touch the rubber 'Off-Model' to test for tackiness without damaging the first layer. Once the rubber is tacky, mix and apply the second layer, this time adding no pigment.
