Ultimaker 40mm extrusion fan

thingiverse

Print the parts, ensuring the funnel's wingtip is correctly oriented. Secure the fan to its housing using four screws before attaching the fanhouse to the funnel with glue. Mount the bracket onto the extruder housing, fitting it with four nuts for height adjustment. Attach the fan assembly to the bracket, maintaining a small gap (1-2mm) from the nozzle and funnel. Verify proper Y+ endswitch adjustment across the entire X range.