K40 exhaust case 10cm tube fan

thingiverse

I wanted another fan then the included China made fan, that could connect to my 10cm dryer tube. It uses a standard 10cm fan from the DIY shop, in my case a Rotheigner Air tube 100 from the local Hornbach. Cut out of 3mm plywood, for me it is more then sturdy enough. The part that slides into the K40 has two layers, one with some cut outs to allow the screws to pass. I used some insolation foamtape to get a snug fit to the machine. Extra advantage is that the laser tube compartment can be opened without removing the fan.