Mold Making Material - 32 oz (473 ml) Silicone Kit

Mold Making Material has an easy 1:1 mixing ratio, by volume. Simply measure equal parts of Part A (which is dark blue) and Part B (which is white) and mix until you have a consistent medium blue.

For more information, see our blog How To Use Mold Making Material?

After mixing, you will have approximately 45 minutes to pour the silicone before it becomes too gelatinous to use.

You can demold after 3–4 hours at room temperature (70–75°F or 21–24°C). Warmer temperatures accelerate curing, so these times are approximate. We do not recommend curing Mold Making Material below 60°F (16°C).

Yes, Mold Making Material is odorless, non-toxic, and free of VOCs or BPA. It contains no fillers or solvent ingredients and does not release fumes.

Once opened, use Mold Making Material within 6 months. For best results, tightly reseal containers after use and store at room temperature.

Yes, Mold Making Material is FDA 21 CFR 177.2600 compliant and food safe once cured. It can be used to mold items such as chocolate, candy, fondant, ice, butter, gelatin and more.

Please note: Mold Making Material is intended for molding only and should not be used for cooking or baking. Molds designated for use with food should ONLY be used for food.

For more information, see our blog Make Your Own Food Safe Silicone Molds.

Mold Making Material is ideal for casting moldable materials such as epoxy resin, cement, plaster, polyurethane, wax, soap, potters clay, polymer clay, play dough, rubber, foam, and paper mâché to make prototypes, art projects, architectural details, statues, figurines, candles and more.

Yes, it's important to properly prepare your original object before pouring silicone to ensure a clean, accurate, mold.

Start by making sure the object is thoroughly clean and dry. Any dirt, dust, or grease can prevent the silicone from adhering properly, and dust particles could be captured in your mold.

For porous materials like unvarnished wood, unglazed plaster, ceramics, or concrete., apply a thin coat of sealant or paint first. This prevents the silicone from soaking into the pores of the object.

See our blog How To Build A Box For Mold Making for more information.

Place your prepared object inside a frame that’s slightly larger than the object itself — ideally leaving about ½ inch (12.7 mm) of space on each side for a stronger mold. If your object is lightweight, secure it in place with glue to keep it from shifting during the pour.

Place the prepared object inside a frame that's slightly larger than the object itself - ideally leaving about 1/2 inch (12.7 mm) of space on each side for a stronger mold. If you obejct is lightweight, secure it in place with glue to keep it from shifting during the pour.

You can make a frame from simple materials such as plastic containers, plastic-lined paper containers (like milk cartons or tetra-pak juice boxes), or cardboard lined with packing tape. Make sure all the edges are sealed with packing tape to prevent leaks.

See our blog How To Build A Box For Mold Making for more information.

Properly cured molds made with Mold Making Material will last for years without deterioration.

Mold Making Material is a high-quality, dense silicone with excellent release properties and does not typically require a release agent with most materials. However, we recommend testing first.

Clean tools while the product is still wet with paper towel and isopropyl alcohol.

A one-part mold is used for items with a flat surface on one side. It can be made in a single pour, typically with the flat side of the object tacked to the bottom of the frame, both to hold it in place and for easy removal.

A two-part mold is used for items that don’t have a flat side. For a two-part mold, the object is embedded halfway into a block of clay surrounded by a frame, and the silicone material is poured around it. Once cured, the box is flipped over. The clay is removed, and silicone is poured around the object again.

See our blog One Part vs Two Part Molds for more information.