I'm a bit late to the impossible passthrough party - but inspired by many of the cool ones out there I wanted to see if I could design one with my limited Tinkercad skills - and I seem to have managed!

Here 3 different outers and 3 different inners that all work together giving lots of combinations of fun!

Another cool compatible passthrough is here: [https://makerworld.com/en/models/700732#profileId-630157](https://makerworld.com/en/models/700732#profileId-630157)

NOTE:- The taller thinner ones need VERY GOOD bed adhesion on a bed slinger - they print very reliably on my P1S, but I needed glue stick for my A1 Mini to keep them down.