Mechanical Vacuum Switch

I wanted a mechanical switch to turn on and off my bench mounted vacuum system using only a single button so I designed this quick mechanism using a reciprocating rotary gear to turn rotary motion into reciprocating motion. It is printed in PLA (Base, Top, and Switch Holder) and ABS (Gear and Slider).
http://www.youtube.com/watch?v=TfMCX3Ipljo
Fits a Ridgid 6HP (16) Gallon Wet/Dry Vac (I'll have to check the "gallon" figure later)