Maintenance FAQs

What is the expected lifetime of a heater block assembly?

There are several factors that will impact the lifetime of a hot end assembly which can lead to filament leakage. Some of these factors include leaving the machine at temperature for too long, improper print settings, or printing at improper speeds.

Low-temperature (ABS) vs. high-temperature (PEEK): If you are printing at high-temperature most of the time, you can expect your hot end assembly to experience quicker wear.

The expected lifetime of a hot end assembly is 100-200 hours of printing service.

What kind of grease should I use on my AON-M2?

Use Krytox GPL 225 grease. This product has been specifically selected for its chemical compatibility with motion components and high temperature resistance. The use of alternate products may damage your printer components and will void your warranty.

You can find instructions for lubricating the axes in our Maintenance articles.

What kind of regular upkeep and maintenance do you recommend?

Weekly/before printing

  • Clean the build chamber
  • Check the coolant level
  • Check the hot end set screws


  • Lubricate the axes
  • Change the wiper brush assembly
  • Tighten endstop screws

Every 6 months

  • Clean the electrical enclosure fan filter
  • Drain and refill the cooling circuit

As needed

  • Replace the heater block assembly
  • Replace Kapton tape
  • Swap materials in the heater block assembly
  • Software updates
  • Hot end PID tuning
  • End stop calibration

Last modified: August 12, 2019