Engineered with a clear focus on steel sheet processing, this portable spot welder is specifically optimized to handle steel materials up to 1/8 inch (approximately 3.18mm) in thickness-making it an ideal tool for fabricators, DIY enthusiasts, and small-scale workshops tackling steel-based projects. Its tailored design ensures it delivers robust, consistent welds that boast exceptional shear strength and structural integrity.Please Note: Not suitable for aluminum & stainless steel.Only Used For Iron.Crafted exclusively from premium-grade copper material-a choice driven by copper's exceptional thermal conductivity and natural resistance to wear, these copper tips maintain their structural integrity even during prolonged use, delivering long-lasting performance and unwavering reliability that minimizes the need for frequent replacements, saving both time and maintenance costs for users.Operating this handheld welding tip gun couldn't be more straightforward-just grip the ergonomic handle, give the lever a firm but gentle pull to engage the mechanism, apply steady, even pressure to prime the tip, then press down smoothly to activate the weld. No complicated knobs, no confusing settings-every step flows naturally, so even those new to the tool can master it in seconds.