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Back part & duct sub-assembly

4028 Part Cooling Fan

Pay special attention to the fan airflow, it should blow the air towards the cooling duct. Most fans have a small arrow indicating the airflow.

Point the fan wires to this side.

2x M3x35 Countersink Screw

Feed the M3x35 screws into the toolhead plate, through the 4028 part cooling fan and tighten them into the printed sub-assembly.

Take care not to over tighten the screws as you can damage the printed parts.

Avoid using a ball end hex key, as they are more prone to damaging the sensitive M3 countersink screw head.

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