The NASH “NSW – 8 CD” is a microprocessor based, digital controlled, compact and portablestud welding power source capable of welding studs upto 8 mm diameter. The NSW StudWelding systems with tip ignition run according to the principle of capacitor discharge. Thesystem uses a quick discharge from battery of capacitors to generate electric arc energy.The visible side of the workpeice is almost free from pressure marks or deformation.