Latest project was rehousing my home-made vacuum pump. It comes in very handy for testing any vacuum related system without having to run the engine. Hooks up to the battery. Great for diagnosing Hideaway problems.
I need to add a check valve downstream of the pump, upstream of the gauge to see if a system is holding vacuum. The cheapo pump doesn't hold vacuum well when it's not running.
Feel free to add any of your 3d printing projects to the thread.
