Clock mold 871 has 1" square grids. The entire mold measures 9" square and is 1 1/2" deep.
To use the small mold in conjunction with the large mold, the female part of the clock mold insert is to be pressed on the male part of the large clock mold. Then pour the resin so it just meets the underside of the top insert. Allow to cure as normal. Once cured, move the insert part and you will now have a recess ring to put your hardware.
How to Use Resin Molds: Remove any dust and particles from your reusable mold. Molds do not require mold release when casting with resin, however, it is strongly suggested. We recommend the use of Castin' Craft Mold Release and Conditioner. Protect your work area with freezer or wax paper. Treat mold with mold release and allow to dry. Place mold on a level surface and fill the cavities to just below the top. Once the pieces are cured, turn the tray over and press the center area of each piece while flexing to release the casting. Do not use sharp objects to demold your resin as you will scratch your mold. Be sure to also read our plastic resin mold care tips to ensure a long life for your molds.