A stud welding gun fuses metal studs or fasteners to a base workpiece through an electric arc process. Two primary methods exist: capacitor discharge (CD) and drawn arc (DA), each suited for different material thicknesses and stud diameters. The process attaches fasteners without holes, bolts, or rivets across construction, automotive, shipbuilding, and manufacturing applications. Models with electronic lift control deliver complete process control and repeat accuracy, with CD welding cycles completing in milliseconds to produce strong, structural welds with minimal thermal distortion.

Ergonomics and durability define the tool design. Lightweight models weigh under 2 lbs to reduce operator fatigue during prolonged use. Housing constructed from glass fibre reinforced polyamide or Delrin withstands tough operating conditions and heavy workloads. The grip and balance accommodate work gloves while keeping cables secured away from the hand.

Available models span capacitor discharge, drawn arc, and short-cycle welding configurations with welding ranges from 3mm to 25mm diameter studs. Standard, hi-lift, and short-cycle variants differ in cable thickness, stud lifting ability, and weight to handle applications from delicate thin sheets to thick, highly stressable joints. Automation-ready models feature interfaces for remote triggering and integration with auto-feed systems.

Performance specifications include welding range, weight, and cable dimensions. Typical drawn arc guns weld 3mm to 16mm diameter studs at up to 10 studs per minute, weighing around 5.4kg with cable. Compact CD models weigh as little as 0.6kg without cables. Electronic lift adjustment, damping control, and overheat prevention systems ensure stable welding results across numerous operations.