Ecto Goggles Hourglass knob (on-off)

Like a lot of the things I make, I had trouble finding accurate models, so I made my own. The measurements were taken from a real knob that I purchased. Included are two versions of the knob; one is taken directly from the knob dimensions, the other has the bottom filled in and a hole put in it to attach with a #8 screw. "#8" is on the bottom of the screw on part in case, like me, you dont look at this part after you download.
I am also including the 123D file as well, because why not.

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