Sponge Add-On for Soldering Iron Stand

A while ago I printed NorthernLayers' "Soldering Iron Stand". Now I got myself an ERSA cleaning sponge (55mm x 55mm) and would like to use it with the stand. There are remixes which support bigger sponges than mine. So I choose the cheap solution and designed an add-on which can be glued onto the original soldering iron stand instead of remixing the original model.