Aeropress GO mug extension

As I got Aeropress GO and Fellow Prismo “espresso” filter, there were no chance to hold them together covered by that nice red cap. So after few iterations, there is a mug extension, that can now hold not just Prismo but event filter case under cap with still some spare room. 

Simply slide the extension on mug from bottom all the way up, it will hold there by nice amount of friction. Put everything you need inside the mug and put the cap on. You need to stretch the lid over the edge of extension by finger a little bit.

Best to print with PETG as its more flexible than PLA

Layer height of 0.2mm, no other special requirements ;)