Chapter
Melting wax in a water bath
How to melt wax gently in a water bath, why the water limits the heat, and what overheated or wet wax looks like.
Wax melts at a low temperature, but it can overheat and ignite. Heating it in a water bath keeps the temperature even and keeps the wax away from direct heat. The water in the outer pan acts as a limit, so the wax cannot get much hotter than the water around it.
Steps
- Stand a clean metal pitcher with a cool handle inside a larger pan.
- Fill the outer pan with water to about the level of the wax that will go into the pitcher, and no higher.
- Break large blocks of wax into smaller pieces so that they melt evenly.
- Heat the outer pan gently, and keep the water below a hard boil.
- Stir the wax with a clean tool until it is fully liquid and clear, with no solid flakes left.
- Lift the pitcher out with a cloth or a tool, and set it on a surface that does not burn.
What can go wrong
- Overheating: the wax smokes, darkens, or gives off a sharp smell. Turn the heat off at once and move the pitcher away from the source of heat. Cover it with a lid if one is at hand.
- Water in the wax: the wax spits and cools with cloudy patches. Keep water away from the pitcher, and dry any tool before it touches the wax.
- Unattended wax: a pot of wax left alone is one of the most common causes of fire in a candle workshop.
The bath is working correctly when the wax is clear, free of lumps and water, and kept at a steady, moderate temperature without any smoke.