This is how you print a part-fan duct without a part-fan duct.

This is how you print a part-fan duct without a part-fan duct.

Necessity is the mother of invention

Ahh zip ties. They are what I used to push the filament into my drive gear when my extruder broke. Now I keep a spare extruder for that reason but they do the job.

Nicely done. Good-quality packing tape also works for bits like this.

what are you printing with ABS or PLA?

It’s in PLA.