Here are a few tips to cut crown molding. Shop Now Polyurethane gives you the look of a plaster molding at a more affordable price, Chapman says. It resists changes in moisture, pests and rot ...

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 ...

The less expensive types of crown molding—PVC, polyurethane, and polyethylene—are easiest to install. Successful installation of MDF or wood crown molding requires intermediate carpentry skills.

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 ...