Do as I Do. Making a Mold from Castable Polyurethane How to Use Liquid Polyurethane. Posted: February 18, 2025 \| Last ...

The next approach was to make a mold with the 3D printer and pour the chosen polyurethane resin in, but a simple hollow mold didn’t work because the polyurethane heats as it cures. The combined ...

With the core loaded into the mold, urethane resin is poured in through the top until all the empty space is filled. But you’re not done yet. All those little air bubbles in the resin need to be ...