This is a 1500-watt, single-wire laser welding machine. Let's see what the welding degree is for different thicknesses.

First test the thin plate, start with a 0.6mm stainless steel plate, and try it without adding welding wire:

The effect is also good.

Then try 0.5mm spot welding. It is said that such a thin plate is as thin as paper.

With a 1500-watt device, stainless steel and carbon steel can be welded within 3mm without any problem, and all can be welded through.