Ecto Goggles Hourglass knob (on-off)

thingiverse

I created many of my projects with difficulty finding precise models, so I made my own from scratch. Measurements were taken directly from an actual knob that I purchased for accuracy. Two versions of the knob design are included; one is a direct replica of the original dimensions and the other has been modified to include a filled bottom and a hole for attaching with an #8 screw. The "#8" reference is placed on the bottom of the screw attachment in case you, like me, often overlook this detail after downloading. In addition to the 3D model files, I've also included the original 123D file as a bonus. After adjusting my initial design, it was trimmed down to achieve more accurate dimensions.