After applying the powder, it must be heated to between 150 and 200°C for 10 to 20 minutes, depending on the powder.
This can be done with any heat source, as long as it consistently reaches the required baking temperature.
Depending on the size of the piece, this can be done with a hairdryer, an infrared heater, or an oven.
An oven is preferred because it provides consistent heat and is not affected by the surrounding environment. However, if the piece doesn't fit in an oven, other heat sources can be used. However, this will take longer and require more attention and monitoring.
An infrared thermometer is a useful tool for checking the temperature.