When a product has exceeded its shelf life, the casting process can become unstable. Working time and demolding time will likely change as well.

Temperature plays a major role when it comes to mixing and curing silicone, resin or epoxy. Heat and humidity can speed up your curing time and cooler temperatures will do the opposite and slow down your curing time.

When adding metallic or glow-in-the-dark powder to your resin, you should start by adding small amounts and continue to add more until you reach the desired result.

When adding pigment to a project remember a little goes a long way. Add pigment by drops until you reach the desired color. Make sure to make a note of how much pigment you used so you can match if making multiple batches.

There are few ways you can eliminate bubbles in your silicone rubber mold:

• Degas material within the working time frame.
• Pour a thin stream and allow material to slowly fill in any negative space.
• Use a thinning agent that will allow bubbles to rise faster.