Casting parts in silicone is great, and 3D printing in resin is fantastic for making clean shapes, so it’s natural for an enterprising hacker to want to put the two together: 3D print the mold ...

[Jan] notes that this generally necessitates the use of condensation-cure silicones, as additive types don’t cure well in resin molds. The condensation silicone is mixed up, degassed, and poured ...

"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.