Skip to main content
  1. The simplest method of cleaning the gears/ hobbs is to use canned air to dislodge any dust/ debris. The simplest method of cleaning the gears/ hobbs is to use canned air to dislodge any dust/ debris.
    • The simplest method of cleaning the gears/ hobbs is to use canned air to dislodge any dust/ debris.

  2. If you have experienced prolonged filament grinding, you may need to fully disassemble the unit for more rigorous cleaning. The easiest way to do this is to first unmount the Hemera. Locate the two screws that fasten the fan.
    • If you have experienced prolonged filament grinding, you may need to fully disassemble the unit for more rigorous cleaning.

    • The easiest way to do this is to first unmount the Hemera.

    • Locate the two screws that fasten the fan.

    • Undo the screws using a posidrive PZ1 screwdriver.

    • Remove the fan.

  3. Locate the x2 M3 screws that fasten the heatsink to the motor. Unscrew the x2 M3 screws.
    • Locate the x2 M3 screws that fasten the heatsink to the motor.

    • Unscrew the x2 M3 screws.

    • Before attempting to remove the heatsink release any idler tension to prevent the spring getting lost.

  4. Remove the heatsink. Some resistance is to be expected.
    • Remove the heatsink.

    • Some resistance is to be expected.

    • You will notice the drive gear can't be removed with the heatbreak still in place.

    • The previously trapped square nuts will now be loose in the T-slots, be careful not to loose them.

  5. By removing the heatbreak you will be able to remove the drive gear. A standard tooth brush is all that's required to clean the teeth.
    • By removing the heatbreak you will be able to remove the drive gear.

    • A standard tooth brush is all that's required to clean the teeth.

    • Avoid using a brass or other metal brush on the hobbs.

Finish Line

One other person completed this guide.

Dan Rock

Member since: 06/07/2018

21,817 Reputation

40 Guides authored

One Comment

Step 5 says: “Avoid using a brass or other metal brush on the hobbs.” Can you explain to us why? I had thought that a brass brush wouldn’t harm the hobbs?

Anthony K. Yan - Reply

Add Comment

View Statistics:

Past 24 Hours: 3

Past 7 Days: 15

Past 30 Days: 101

All Time: 895