Yes, copper tungsten plates can be machined or fabricated using standard metal working tools & techniques, such as drilling, turning, milling, & sawing. However, it is important to note that copper tungsten is a hard & brittle material, so it may be more difficult to machine than other metals. Also, it will be better to use diamond or carbide tools to machine copper tungsten as it is abrasive and harder than other materials. It is recommended to use a coolant to reduce heat & prevent cracking during machining.