it is suitable for cutting up to 1.5 mm, it cuts very well and quickly, but actually I have it for cutting 2.5 mm thick steel sheet bought, but. The machine can actually cut the slab, but you can't cut longer than 2 inches because the slab lifts up against the machine and you can't advance (cut further) due to the thickness of the slab. The thick plate is too difficult to cut. From this I conclude that I bought a car, but I cannot use it for this purpose. Then I bought a plasma cutter.