The document describes an automatic end grinding machine that was modified to grind both faces of springs up to 300mm in diameter, reducing the grinding time in half compared to single face grinding. The machine uses two grinding wheels connected to a motor via bearings, rack, and pinion setup. A work holding device holds the spring and coincides with the wheel axis, regulated by a gearbox and motor. Vacuum pressure removes grinding debris from the work area. The overall setup is enclosed in a cast iron casing. The modifications result in better spring production efficiency while maintaining the same overall efficiency as single face grinding.