Cooling Block Set Screw Inspection

Model [X] AON-M2 [X] AON-M2 2020
Category [X] Preventive [ ] Corrective [ ] Troubleshooting


The procedure that follows explains how to tighten the cooling block set-screw on the machine. A tight set-screw prevents:

  • First print layer not sticking correctly.
  • Inconsistent print layers.
  • Cooling block falling out.

Estimated time: 10 minutes


Qty Description Specification
1 Hex Key 3 mm

Parts Information

None required.

Personal Protective Equipment

Qty Description Specification
1 Safety Eyewear N/A

Prepare the Machine

  1. Home XYZ.
  2. Lower the Z-axis by 300 mm.
  3. Push the E-stop button.
  4. Wait until the build chamber, build plate and hot ends are at room temperature.

Tighten the Cooling Block Set Screw

Allow all machine components to reach room temperature prior to proceeding further. Failure to allow components to cool down will result in thermal injury (burns) to personnel.

Do not over-tighten the set screw. This will damage the toolhead(s), cooling block(s) and/or screw(s). Only tighten the screw until it is not loose.

  1. Tighten the T0 cooling block set screw (1) with the 3 mm hex key.
  2. Tighten the T1 cooling block set screw (1) with the 3 mm hex key. Cooling Block Set Screw

Test and Return to Service

  1. Release the E-stop button.
  2. Home XYZ.

Last modified: June 14, 2021