What is the minimum nozzle size?

The LILY Kit and LILY Kit Lite are both designed to be used with M6 threaded nozzles. Thus all standard M6 threaded nozzles can be used with our extruders. The minimum recommended nozzles size from our side is 0.8 mm. Smaller nozzles might as well work, but we can't guarantee and also can't offer technical support for those use cases.