"Ring holders, coasters, and trinket trays are some of the most popular ... You'll also need a high-quality casting resin, a silicone mold for shaping, and, of course, dried or artificial flowers.

They decided to compare the aluminum molds they usually use with some 3D printed molds created with a resin printer. They used two different resins, one on each side of the mold. You can see a ...