Milling Sintered Ceramic

Recently we were approached by a customer to mill sintered ceramic. Is it possible, the company, an electronics company, could not hold the tolerances required by their customer by molding the ceramic. There are tools available that have the capability to mill, drill and even threadmill both sintered ceramic as well as sintered carbide. The challenges are tool life and the end product being stable ( not breaking or cracking). The customer's product was only .030" thick and it was very delicate. We were able to drill the hole and also open up the window in the ceramic without cracking it and generate the tolerances that the part required. Due to the size of the parts, we employed a 1mm x 2flute endmill to profile mill the window in the part. We also used a 1mm drill to drill the parts. Our customer was able to mill and drill 8 parts with minimal wear on the tools.