Hot embossing is an efficient technique for manufacturing high-quality micro-lens arrays. The machining quality is significant for hot embossing the micro-lens array mold. This study investigates the effects of micro ball end-milling on the machining quality of AISI H13 tool steel used in the micro-lens array mold. https://www.roneverhart.com/Peavey-KB-1-20-Watt-1x8-Keyboard-Amplifier-p27006/