Reddit reviews 4 Pack DIY Square Coaster Silicone Mold, Molds for Casting with Resin, Cement

High-quality silicone, safety, high Flexible, full transparency, Super easy to de-moldThe mold is used to create square coaster, beverage coaster, bowl mat etc, Mold is reusableIt's not super soft, the bottom of the middle is not easy to bendthe size of casted product: Square Mold: 3.94" x 3.94". Need 3.4 oz of resin to fill one moldPlease do not use Strong Corrosive Material, which will shorten the life of the coaster, and even lead to the failure to demould and damage the mold.