Yes, you definitely can machine alumina ceramics. The easiest time to machine alumina ceramic is before the process of sintering, during what is called a “green state”. Machining during this stage of the process allows easy machining into different complex geometries, but machining at this stage is not always possible, depending upon the part shape, size and intricacy, and because of the further shrinking of the part during the sintering process
That is why professional alumina ceramic manufacturing companies usually machine alumina after sintering using high-quality diamond-coated tools. These tools help abrate the material away until the desired form of alumina ceramics is created.
This type of machining process will guarantee that alumina ceramic will retain precise dimensions after machining. However, alumina is hard and tough, and this process tends to be expensive and time-consuming.
That is why it is important to partner with a company that injection molds alumina to near net size in large quantities. This will help reduce overhead costs, helping you receive a lower price for alumina advanced ceramic components and products of an equally high quality.