Ryobi Compact Blower (PSBLB01) Nozzle

I designed a concentrator nozzle for the Ryobi brushless compact blower (PSBLB01) in an attempt to increase the output air velocity for blowing water out of bearings and other bike parts after they've been cleaned . I measured the blower outlet inner diameter at about 51mm so I reduced it down to 36mm to achieve about a 50% reduction in cross section area based on a simplified rule of thumb that axial fan blowers can tolerate up to this reduction in cross section relative to the fan's original cross section without a significant loss in flow rate.  I'm not sure how effective my design is for this particular blower as I'm afraid I was probably over zealous and should have gone with a smaller (i.e. 40%) area reduction. My blower came with a concentrator that I think is about 48mm inner diameter but wanted to try and design something a little smaller to get higher velocity and more concentrated air flow for smaller parts.  I printed mine in ABS as I had some lying around and didn't really care about the color. I used standard Orca Slicer settings and you should be able to print it without supports. You could probably get away with printing it in PLA but be aware that the heat generated by the motor and air friction could start to melt PLA if you run the blower for long periods of time.