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 created a 28.6 mm hole in my case)If you use the knife guideDrill a 4 - 5 mm hole in the center of the position where the plug should be installedPlace the tool with the pin into the holeUse a sharp knife in the slot and turn the knife guide with it (or turn the part, like I did it)Be careful and wear cut-resistant gloves or similarDeburr the edge and clean the container from chipsPush the socket into the hole with the orientation you want it to have later. This step can be tricky. It helps to us