Welding Torch Thermal Dynamics 1Torch is the first plasma cutting torch to do with almost all plasma cutting power supplies. The 1Torch works with a high frequency start system, a CD start system, a touch start system and a blow back system. Install 1Torch on your current plasma power supply and you will soon benefit from the latest high performance torch technology available today. Look for Thermal Dynamics marks on your plasma consumable parts for Genuine Thermal consumables.