JoBwan... I know it's been a while since your posting, but I'm due to get a GR-712 in about two months. Sounds like everything went exactly as you'd hope it would. This will be our first chip making machine, we're a Steel service center that focuses on burning, lasers and water jet cutting steel and stainless steel, with some aluminum. I'm really just looking for an update on your machine's performance, what kinds of things have you got yourself into that you didn't expect it would handle??