Brad's IKEA LACK Filament Tunnel

I really liked ChipCustomizer's filament tunnel, but I had problems with it breaking at the layer line on the screw part if I accidentally tightened it too much.

So I recreated it with thicker walls. The tunnel has a 10 mm outer diameter (instead of 9) and the inner diameter is 4 mm (instead of 5.5). And I also added a couple of chamfers.

I recommend you print this using adaptive layer height so that the screw sections are printed in 0.1 mm and the flat tunnel part is printed at 0.3 mm.