DIY Frag plug mold

thingiverse

Make your own frag plug molds! Use this mold to cast your own cement frag plugs and start enhancing coral growth. Every plug features a 4-part design for effortless release, eliminating the need for release agents that can pollute the water with toxic substances. To create a hole and pattern in the plug, print the stamp first, then press it gently into the drying cement at a slight angle - about 60 degrees - and allow it to dry completely. Once your plugs are fully dry after 2-3 days, submerge them in water for approximately one month, allowing the pH levels to stabilize before use.