Making a custom CNC keychain is a relatively simple process. metal lego keychain will need to offer the material, finish off, and quantity regarding your item. Once you've specified these information, all you need to do is send the email. The COMPUTER NUMERICAL CONTROL company will manage the rest. You'll be emailed back immediately with an evidence of your order. Here's how this works: Once might sent the e mail, the CNC business will work on your order.