Vacuum nozzle 31 mm inside diameter

My first done in sketchup, I wanted a nozzle to clean my car.
This is my first stl made in sketchup, so the design is really bad, it is basically a 15 mm tall cylinder that is connected to a rectangle by some really sloppy triangles .
My goal was to have really thick walls and a sturdy nozzle that wouldn't break when using and also which would print ok even on a very bad calibrated printer .
Any remixes that improve the printing time are welcome !