EDM means Electrical Discharge Machining, it is a common method for spare parts production.
This material gives better results when cut with oxygen. When oxygen is used as the process gas, the cut edges are slightly oxidized. For sheet thicknesses up to 4mm, high pressure cutting can be performed with nitrogen as the process gas.
You can also contact Ningbo Sinster Machine Co., Ltd to do it for you, Sinster can provide you the perfect products in China cheap price. Sinster have good experience in combining edm machining with cnc machining, cnc milling, cnc drilling, cnc grinding to produce your spare parts. Please see more details for cnc service at: https://www.syluecncmachining.com/cnc-machining-services