The OpenFlexure project aims to make high precision mechanical positioning available to anyone with a 3D printer - for use in microscopes, micromanipulators, and more. Our main project is the OpenFlexure Microscope. The OpenFlexure Microscope is a customisable, open-source optical microscope, using either very cheap webcam optics or lab quality, RMS threaded microscope objectives. It uses an inverted geometry, and has a high quality mechanical stage which can be motorised using low cost geared stepper motors.