1) Calculate the amount of wax needed to make the candle.
If you’re using your mold for the first time, you need to measure how much wax it will take: place the mold on the scale, turn it on, and fill the mold with water. Multiply the resulting weight by 0.9 (average wax density). Add a few more grams (3–10%) because some wax will remain on the walls of the melting pitcher.
2) Place the melting pitcher on the scale and tare it, then add the required amount of wax.