K40 90Deg Exhaust Duct (for updated K40 with the 120mm fan in the rear)

thingiverse

I built an exhaust duct for my K40 printer that directs the exhaust straight up at a 90-degree angle since I needed that exact setup. This is specifically designed for one of the upgraded K40 models with the 120mm fan located in the back. The build consists of two parts because the top needs to be removable to access the laser tube chamber. It fits securely and may require some minor sanding on the elbow to ensure a perfect fit. This duct connects directly to a 4-inch flexible duct. I printed it using PETG material, with supports set at .3 layer height. It's a big print, but it turned out rock solid despite its size.