These are napkin ring holders made with liquid urethane plastic, also designed to match with the 'X' shape tea light candle holders.
First, a box constructed out of Birch plywood and sealed with acrylic spray was built to hold the two part mold. A sealed Super Sculpy model of the part was constructed to keep the form of the mold used as the plug.
First, a box constructed out of Birch plywood and sealed with acrylic spray was built to hold the two part mold. A sealed Super Sculpy model of the part was constructed to keep the form of the mold used as the plug.
I then poured part one of the two part mold using Smooth on Mold Star 16 (liquid Silicone rubber). After it fully cured, I sprayed mold release, cut out notches, and poured the second part of the silicone rubber two part mold. The image below shows the two part mold in the open position after separation.
Below are images of the finished napkin ring holders. Smooth Cast 325
(liquid plastic urethane), and 326 were used.
Post processes included trimming the flashing,
sanding the final pieces, and cleaning the mold before reuse.
