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Why Candle Molding Fails to Cure?
When using a candle as a master mold, why does it remain sticky and uncured? The main issue lies in the candle itself.
Reasons for Silicone Not Curing
Problems with candle molding are mainly caused by cure inhibition. By controlling the following two issues, failure can be avoided.
- Candle materials: Chemicals in candle wax (especially fatty acids or additives in soft wax) affect the curing process. Paraffin or soy oil reacts with silicone, resulting in sticky, liquid, or uncured pieces. This is often caused by using scented, colored, or soft container waxes. Soft waxes (such as container soy wax) usually lead to curing problems.
- Additives in candles: Essential oils and dyes in candles are common inhibitors.
Preventing Problems in Advance
- Ensure the candle is pure, unscented wax.
- It is recommended to use pillar wax or paraffin wax. Using a harder wax as the master mold works better.
- Before molding, apply a dedicated silicone release spray on the candle to create a barrier layer, which will improve the success of molding.
Tips for Success
Unfortunately, because the hardener in the silicone rubber reacts chemically with the candle, its curing ability is destroyed, and the curing cannot be repaired.