Aluminum head. 12pcs. Hi, let me first state that I am fairly inexperienced with machining and blueprints, so with that said if you have any suggestions, questions, or comments, please get a hold of me. This posting is for one of many parts to a prototype I've been working on for the past year. Material needs to be a 6061 aluminum. 12 pieces of a 3"×3"×1" stock is the general size of the part. With one hole partially threaded. Looking for shops close to area code 49007(MI) to cut down on shipping costs and time. But still open to all others. Please include estimates for shopping and materials in initial estimates. Open on completion time frame. Thanks for looking.