Do not buy these garbage products
Do not buy these garbage products. My K1 Max filament runout detection failed within weeks of receiving it, and the support reps are trash. "Send me a video of the problem", they say. "Just disconnect it, and the machine will run without it", they say. Then, 18 months later, the motherboard fails. I bought a new motherboard. The print head starts slamming itself into the sides on self-check. I contacted Creality support, and they told me the motherboard they sold me for my K1 Max is not compatible with my K1 Max and that I now have to purchase and replace both of the stepper motors. These products are absolute trash! DO NOT BUY!!!