: The design uses heavy-duty CNC machined brass bus bars to distribute massive current with minimal heat generation (less than 40 micro ohms of resistance).
Here's a simplified schematic of a welding machine: kweld schematic
To understand the schematic, one must first understand the problem it solves. Traditional spot welders often use large transformers (AC welders) or massive capacitor banks. AC welders are heavy and lack fine control; capacitor (DC) welders offer control but can be physically massive. : The design uses heavy-duty CNC machined brass
A standard kWeld complete kit includes the following key hardware: kweld schematic