Inline 2 Vacuum Engine - WORK IN PROGRESS

THIS IS A WORK IN PROGRESS, but does run under certain circumstances!This will not forever be in this state where it doesn't run and is a work in progress. I am trying my best.Requires:-A bit of filament (connects the valves together)-Six Wood Screws-Lubrication(not necessary but can help)-I printed this with Hyper PLA Tools:-A VERY strong vacuum-Screw driver for your type of screws-Filament cutters-Lighter(helps the screws form better threads and prevents cracking, only needed the first time)-Sandpaper(because this is still a work in progress, I dont have everything down yet) -To run I use a small rubber tire to create a better seal If anyone is brave enough to print this, I will gladly hear how it went for you so I can improve this model!