Obviously, the details depend on what feeder you're using. We will describe this step using the extrusion upgrade kit but adapting to the Bondtech option should be pretty straightforward.
2-4 hrs for printing, 30 min for assembling
This documentation covers the standard, fixed feeder mount. There is an adjustable version as well, which allows for tilting the feeder back and forth. This is an option if you have trouble finding the correct bowden tube length for a smooth docking process (see step 5 - calibration).
We are going to mount the feeder to the top left corner (seen from behind). This way you can use the bowden tube that comes with the upgrade kit without any modification. That's how it should look like when finished.
Download the stl files from Github, you need:
Recommended print settings are:
Besides the printed part you need:
Unscrew the two top left screws on the back panel.
Mount the bracket, using two washers
Mount the stepper with 4 screws and washers.
Push two M3 nuts into the hexgonally shaped recesses and mount the feeder housing with two screws.
Feeder mount completed.
Attach the bowden and pass the wire harness and the stepper cable to the electronics board in the bottom.
Please note: Ultimaker changed the layout of holes in the back panel over time. Yours might look different than the one shown here.
You can put the additional spool next to the the first one as well if you like. However we prefer mounting it to the side.