High speed cutting is required to generate the heat needed to soften materials without causing abrasion or other damage.
Cutting speeds from 1150 SFM to 3280 SFM are recommended.
Do not use the coolant, it can cause thermal cracking.
Air blow is not used for the purpose of cooling and should not be directed at the tool. It should be used for good chip evacuation only.
Applications where continuous machining are common is highly recommended for ceramic end mills.
Chipping or damage can occur during severe interrupted machining.
Using maximum width and depth of cut from the start of machining may cause damage.
Increase the width of cut (ae) gradually to maintain tool life.
Down cut / climb milling is highly recommended. Up cutting can be unstable.
First recommendation for tool holding is a hydraulic chuck, second recommendation is a precision milling chuck.
Collet chucks are not suitable.
Do not remove any built up edge manually after machining as this may cause chipping.
The built up edge will be removed by the heat generated during the next cutting cycle.
Leave a minimum of .012 inch finishing allowance. Machining with ceramic end mills at high temperatures can affect the outermost layer of the machined material, therefore a final machining allowance must remain.
The chips generated during machining are at extremely high temperatures.
Ensure the inside of the machine is free from any combustible materials.