Compact Filament Feeder 4mm PTFE tube

This is a 1.75mm filament feeder for PTFE tubes with an outer diameter of 4mm. I use it with the [IKEA Samla Box](https://www.thingiverse.com/thing:743280) filament storage solution. You need to drill an 8mm hole to fit the feeder. No screws, no glue necessary. By placing the feeders to the side of the lid you are able to stack the boxes afterwards.