filament buffer (airtight, compact & easy to fill) for Prusa MMU2.0

This is an "airtight", compact and easy to fill filament buffer for your MMU2.0 setup. It uses a check valve for the filament so it is not pushed back on to the spools. Watch the video below on how it works.

Print instructions

How to fill the buffer

Before you start
The buffer does not fix any problems you might have with the MMU2 unit. Please make sure to have your MMU2 running fine before installing the buffer.
If your MMU2 works you will like the buffer though.

There are those metal parts “blech_kamm-sheet_metal_comb”. I still have some remaining stock. If you want to build the buffer drop me a line and I can send it to you for 5€+shipping.

Find all the information here:
Introduction
HowTo

changelog

2019-07-09: changed Buffer3_part2-buffer_part_2-18.stl more clearance for the filament 2mm _> 2.2mm
2019-07-09: changed Buffer3_part1-buffer_part_1-18.stl more clearance for the filament 2mm _> 2.2mm
2019-07-09: changed Buffer3_part_1_with_logo_mod-18.amf more clearance for the filament 2mm _> 2.2mm
2019-06-29:changed Klemmung_1-ptfe_clamping_1_17 increased hole size for easier installation of ptfe tubes
2019-06-26: changed Buffer3_part1-buffer_part_1-17.stl by increasing the pre-bending of the filament
2019-06-26: changed Buffer3_part_1_with_logo_mod-17.zip.amf
2019-06-26: changed Logo_mod-logo_mod-17.stl so it takes less retraction moves
2019-06-25: changed Logo_mod-logo_mod-17.stl
2019-06-25: changed Buffer3_part_1_with_logo_mod-17.zip.amf
2019-06-24: changed Logo_mod-logo_mod-17.stl

references

Thank you prusa for interviewing me at [Maker Fair Vienna]