💡This database doesn't pretend to teach manufacturing but you can find a few quality links below. ToolsFundamentals of Manufacturing - MIT online courseProtolab's design tips for plastic, metal and elastomeric parts for 3D printing, CNC machining, sheet metal fabrication, and injection molding'Manufacturing and Design: understanding the principles of how things are made' by E. Tempelman, H. Shercliff and B. Ninaber van Eyben. Â