The stove is a fire-producing device to heat an object. Heating solid objects can be done directly on the fire or indirectly on the fire or indirectly by using the media stove. The purpose of this study was to determine the effect of adding copper wire to the stove wick on the performance of a used cooking oil stove with a mixture of kerosene. This research procedure is divided into several stages, namely first assembling the used cooking oil stove wick, then testing the results of the effect of adding copper wire to the used cooking oil stove wick with a mixture of kerosene. From the results of tests carried out from the results of data analysis, namely the addition of each copper wire the average temperature is always changing as well as the time. In this study, a good average temperature or it could be said that the temperature increased, namely the addition of one copper wire. So the addition of copper wire in this study greatly affects the temperature of the stove's flame. The characteristic of the flame produced by mixing used cooking oil and kerosene is reddish yellow in color. The characteristics of the flame produced by mixing used cooking oil and kerosene are reddish yellow with a maximum height of 11 cm - 15 cm in each percentage of the mixture. Keywords: Addition of copper wire, jelantah oil, kerosene