Refill plug

A small plug for refilling liquid or (small) bulk material.I designed it because I wanted to have a possibility to refill the cartridge of my automatic soap dispenser (Sagrotan No Touch).The opening is around 20 mm which allows me to pour liquid soap through it without the need of a funnel.Print it with TPU 95A (Tested with eSUN TPU-95A). Print both parts (socket version with or without band)Print the knife guide (optional)Cut a circular opening with a diameter of 28.5 to 29 mm (using the tool c