Laser Cutting Metal - advice for purchase.

I'm wanting to put a laser cutter on my CNC table to cut steel... 3mm (11 gauge) or less, for art projects. Does anyone know of, or have fit their CNC with a laser cutter? I have been looking at x1Pro 1200W, and Gweike M1200. If you've fit one to your table and controller T1/T2 (plasma on/off), could you reply? OR, if you have an alternative machine you have done this with, please, let's connect. Thanks!