This was designed in OnShape, and the designs are here: https://cad.onshape.com/documents/455b8086f4bb2479448cd7d1/w/1123c599a700a3db82cf27ee/e/0bec7eb9d1e2fb510b4bf6c5 NOTICE OF RISK. Burr grinders can at times involve substantial risk of injury including but not limited to fingers getting ground, fingers getting pinched in the motor, use of materials not rated for food contact. NEVER run the grinder disassembled. NEVER put extremities or put anything other than coffee beans inside the grinder. By downloading this model you agree to not hold its designer responsible for injuries sustained using this device.