I tried burning one of the files you posted yesterday. It’s the dragon at 3000 feed rate and 30 percent power I think. Still way too dark and can barely recognize the image. Tried same file on white cardboard and it barely touched it. The darkness of the material you use will have a huge affect on the power and speed needed. The dragon image you posted is especially tough. The entire image is really dark with almost no contrasting details. I’ll try again tomorrow. It’ll be a challenge for sure. I was running firmware with 11 bit gray-scale resolution for a while. Might need to dust that off for an image like this one.