This document contains information for the Prusa MK4 and MK4S adapter, designed to work with the Infinity Flow S1 filament loader. To connect the S1 to your MK4/MK4S, you'll need the adapter that links the Bowden tube from the S1 to your printer's extruder.
This adapter is available here for download or purchase on our website.
Zip File Download: Prusa MK4 Adapter
Contents:
- MK4_Adapter.stl: Printable file
- MK4_Adapter.stp: CAD file
Printer Compatibility
- Prusa MK4
- Prusa MK4S
Printing the Adapter
Print Settings: Original Prusa MK4 0.4 nozzle
- Material: PLA
- Layer Height: .2mm
- Print Orientation: Ensure the adapter is oriented as in picture
After printing, inspect the adapter for any imperfections or weak spots, especially around mounting holes.
Hardware Modifications
Step 1: Front Cover
- Unscrew 3 screws on front cover, "PG-case"
- Remove cover
Note: Remove carfully as other parts are loose during this step
Step 2: Remove Hardware
- Remove 3 screws on front cover
- Remove white nylon washer inside cover
Attaching the Adapter
Step 1: Gather Hardware
- A1_Adapter
- Bowden Push Fitting (ECAS04)
Step 2: Adapter Assembly
- Place adapter on table
- Take off black ring from the fitting and place in adapter
- Place blue seat on top
- Gently press the adapter together (pliers recommended)
Note: Make any rubber grommet on the bottom of the fitting one is removed.
Step 3: Attach Adapter
- Place 3 screws and washer into adapter
- Insert into prusa head
- Screw in
Step 4: Plugging in the S1
- Insert the Bowden tube into the adapter's feed port ensuring the Bowden tube sits all the way down
- Ensure the S1 is positioned securely and all connections are properly seated
- Turn on the S1 and verify that it loads as expected
- Begin printing :)
Note: Check all connections for a secure fit, and ensure there are no loose cables
