- Right to left;
- Top, plain resin, jersey knit, fiberglass
- Bottom, thick nylon rope, average nylon rope, cotton twine
Did some looking into different ways to make molds for resin casting. We used a wood board with 1in pockets drilled into the surface with various materials lining the pockets. We chose, from left to right; scotch tape, aluminum foils in two methods, saran wrap, scotch tape with a bolt, silicone mold condisinor, silicone, plastic cup with a dye test.
I’ve been testing different ways to make molds for resin. Insulation foam doesn’t really work. Resin heats when setting causing the foam to melt.
Few months back I sent a smaller printed Jackrabbit to a friend who made a silicone mold from the object. After acquiring some new resin, I tried a cast with the new resin. The mold picked up everything from the surface of the 3D printed object, hence the ridges and the bubbles are from a lack of tamping when casting.
The new resin I found has worked well, and can be found outside of craft stores. The Famowood Gloss Oil-Based Polyurethane, which is intended for finishing flooring and tables. However, it’s the same components and works with resin dyes meant for craft polyurethane.