I have already made an air duct coupling to direct air from the rear fan of the Bambu X1 sideways. This design is a vertical one, so that a flexible hose can be coupled and the air is directed upwards. For fixing I have included places for 6 magnets 8mm x 2mm but think that these would not be strong enough. There are also 4 holes that line up with the 4 holes on the back of the machine, the one to the left has an M3 bolt which will need to be taken out and replaced with a longer bolt, the other 3 holes you can use self tapping screws or tap an M3 thread and use M3 screws