Chocolate Molds Guide: Silicone vs Polycarbonate, How to Use Them, and What to Buy

Chocolate molds come in dozens of shapes, but almost everything sold today falls into one of two categories: silicone or polycarbonate. The choice between them affects your results more than almost any other equipment decision. Here is what you actually need to know.

Silicone vs Polycarbonate: The Real Differences

The finish difference is significant. Chocolate set in polycarbonate has the glossy surface you see on professionally made bonbons and truffles. Chocolate set in silicone looks more homemade, which is fine depending on the project. For gift boxes or sale items, most people want polycarbonate quality. For family baking or classroom use, silicone is perfectly good.

How to Use Silicone Chocolate Molds

Silicone is straightforward. The material is non-stick by nature, so the process is simple:

1. Melt your chocolate or candy melts to the correct working temperature (around 88-90°F for real chocolate; follow the package for candy melts).
2. Pour or pipe into the mold cavities. Fill completely, then tap the mold on the counter a few times to release air bubbles.
3. Let it set. At room temperature (65-70°F), this takes 30-40 minutes. In the refrigerator, about 15-20 minutes. Do not freeze.
4. Release. Flex the mold from the back, pressing gently behind each cavity. The chocolate should pop out cleanly.

How to Use Polycarbonate Chocolate Molds

Polycarbonate molds are less forgiving but produce better results when used correctly. The most important rule: your chocolate must be properly tempered before it goes in.

1. Temper your chocolate. See the temperature table below. Untempered chocolate will bloom (turn white and grainy) and will likely not release from polycarbonate at all.
2. Warm the mold slightly with a heat gun or by holding it in your hands for 30 seconds. A cold mold causes the chocolate to set too quickly and unevenly at the edges.
3. Polish the cavities with a clean cotton ball before use. Fingerprints, dust, or detergent residue show up in the finished piece.
4. Pour in tempered chocolate. Fill completely, then tap the mold firmly on the counter 4-5 times to release air bubbles. Scrape the top clean with an offset spatula.
5. Let it crystallize at room temperature (65-68°F is ideal) for 20-30 minutes. You will see the edges of the chocolate begin to pull away from the mold slightly. That is the sign it is ready.
6. Release. Invert the mold over parchment paper and tap firmly on the counter. The chocolates should fall out cleanly. If they do not release, the chocolate was not properly tempered or did not set fully.

Chocolate Temperatures: A Reference Table

If you are working with real chocolate in polycarbonate molds, these are the target temperatures for properly tempered chocolate at the working (final pour) stage:

These are working temperatures, not melting temperatures. You melt the chocolate higher, then cool it through the tempering process (tabling, seeding, or machine tempering) until it reaches these ranges before pouring into molds.

Common Mistakes (and How to Avoid Them)

Using untempered chocolate in polycarbonate molds

The most common frustration: chocolate that blooms white, sticks, or breaks when you try to remove it. All three are symptoms of untempered chocolate. If you are not ready to temper, use silicone molds with candy melts instead. Results will not be as glossy, but they will be clean.

Releasing too soon

The chocolate needs to pull away from the mold edges before it will release cleanly. If you invert too soon, the piece may break or leave residue behind. The visual cue is the chocolate shrinking slightly from the mold walls. Give it time.

Washing polycarbonate with soap

Detergent residue left in the mold cavity will cause the next batch to stick. Wipe out polycarbonate molds with a dry cloth after use, then rinse with warm water. If you do use soap, rinse thoroughly and dry completely before the next use. Never put polycarbonate molds in the dishwasher. The heat warps them.

Scratching polycarbonate

A scratched mold surface is the fastest way to ruin polycarbonate. Scratches create adhesion points where chocolate grips instead of releasing. Use only soft cloths for polishing and cleaning. No scrub pads, no metal tools.

Expecting silicone to produce polycarbonate results

Silicone molds produce a matte to lightly glossy finish. If you want the mirror shine of professional chocolates, silicone will not get you there regardless of how well you temper. That gloss comes from contact with polycarbonate, not from the chocolate itself.

Which Mold Type is Right for Your Project

A few common use cases:

• Kids' birthday party favors: Silicone with candy melts. Fast, forgiving, easy to involve kids in the process.
• Professional-looking bonbons or truffles: Polycarbonate with tempered couverture. Worth the extra work.
• Classroom baking projects: Silicone with candy melts. No tempering equipment needed.
• Decorated Easter eggs or holiday pieces: Either works, but polycarbonate gives a more impressive finished result.
• Wedding or event favors: Polycarbonate if you want packaging-quality appearance. Silicone if you are producing high volume and appearance is secondary.

At Gloria's Cake and Candy Supplies

We stock silicone and polycarbonate chocolate molds at our shop at 11117 Washington Blvd, Culver City, CA 90232. Our staff can walk you through the options in person, and we also carry the chocolate and candy melts you need to fill them. Open Tuesday through Saturday, 10 AM to 6 PM. Phone: (323) 289-8807.

We have been supplying the Los Angeles baking community since 1972. If you have a question about which mold works for a specific project, bring it in and we will help you figure it out before you buy.