I am new to CNC machines and am looking to purchase one that will allow me to cut shapes out of aluminum, wood and plastic. Z depth of at least an inch and a bed of 18" at least. Most important to me is precision. 1/100 of an inch is desirable. Specific projects I am interested in are bas relief sculptures in oak, cutting out holes in project boxes of plastic (up to 1/4" thick walls), designs in acrylic, small parts in aluminum. Is brass something I could do as well? I do not know what the limiting factor for that material is. I am not interested so much in speed as precision. My budget is <10k