After igniting the powder in an exothermic mold, wait approximately how many seconds before opening the mold?

The recommended wait time of approximately 30 seconds after igniting the powder in an exothermic mold is important for several reasons. This duration allows the exothermic reaction to reach its peak temperature and ensures that the materials have fully reacted and solidified into their desired form. By waiting this amount of time, you allow for the proper curing of the material, which leads to optimal strength and integrity in the finished product.

Choosing a duration shorter than 30 seconds could result in incomplete reactions or weak material structure, risking the overall quality and safety of the mold. It’s crucial to allow enough time for the exothermic process to achieve full thermal effect, hence reinforcing the timing of approximately 30 seconds as an industry-standard practice for safe and effective results.