In factories, wood often been used as a constructed material, the reason for this is simplicity in repair and replacement. However, hot work during projects is inevitable. A fire occurred in a factory a few hours after they had performed hot work during a repair project. It was determined to be autoignition of the wood, but whether there was enough heat to cause smoldering was questionable, and is the main focus of this research. Literature states when using a cone calorimeter to observe the burning of wood, it was discovered that wood would autoignite when radiant heat exceeded 40 kW/m^2. This research used a conventional blowtorch to perform experiments while using plywood as the material. After the cone calorimeter allowed the plywood to bum, it was heated for another minute before being removed, at which there was no more smoke. After using a searchlight to simulate the sun shining for 4 hours, observations showed visible carbonization and sparks under the plywood, while also continuously smoldering. This shows autoignition within the wood, with the possibility to spread. Therefore, when using hot work equipment, it is recommended that a certain distance be kept from wood based materials as well as using fire blankets to protect these types of equipment.