For as long as I've owned my printrbot, I've searched high and low for an effective fan shroud that would get better airflow around the hot end. Many solutions have been presented, but every single one required removing the metal hotend cover. I still prefer the look and style of the metal cover that printrbot designed, so I finally made my own design that could work with it. The only caveat is that the fan has to be on the exterior of the fan shroud.
This part is not compatible with my Printrbot Play light. I actually created my own version of the RGB lights that Printrbot put on the new simple. Not sure I'm going to post the mount for it because they require custom PCBs.
The square end of the shroud should sit on the build plate. The STL file isn't saved in the right orientation.
- Remove the metal shroud from your printrbot.
- Remove the upper fan from your printrbot.
- Carefully unclip the cable from the edge of the fan. The cable should now only be attached by the solder joints in the center of the fan. This allows the fan to fit flush on the front of the shroud without showing the cable.
- Reinsert the fan cable through the hole from the front.
- Preinstall one of the plastite screws onto the printed part to help line it up.
- Place the printed part on the inside of the shroud, making sure that the cable fits through one of the notches in the part.
- Screw in both plastite screws.
When installing the metal shroud, be sure that the cables from the hotend don't get caught in the fan shroud.