DIY Full Linear Rail Mini Manual Milling Machine

A self-designed full linear rail mini manual milling machine, capable of machining small metal parts. 3D printed, costing less than one hundred yuan. The machining size is only 60*60*50mm, with a frame measuring just 20cm long, 15cm wide, and 23cm high. Suitable for processing small parts, it is currently a fully manual version, with reserved screw holes for later CNC upgrades. It utilizes a 775 motor, a 12V adjustable speed power supply, a 0.6-6mm chuck, six sets of ten-centimeter MGn12C linear rails and standard sliders (each set costing only two and a half yuan). The bill of materials includes corresponding shopping links. The lead screw is comprised of 190mm and 160mm long M5 threaded rods, utilizing two nuts offset to eliminate backlash. The frame, platform, and cross slide are 3D printed with high wall thickness and high-density infill using PETG material to ensure strength. The PDF below contains the bill of materials and a simple assembly tutorial.