Butterfly Lego Vacuum Engine Tutorial!

In this new tutorial, I build the the long overdue Butterfly Lego Vacuum Engine (BLVE)! This unique yet simple engine has only a piston- no valves- as the piston itself performs the action of sealing and letting air back into the cylinder. ~~~~~~~~~~~~ ~~~~~~~~~~~~ ~~~~~~~~~~~~ Follow me on Instagram for exclusive behind-the-scenes content! ~~~~~~~~~~~~ Thanks so much for watching! Please don't hesitate to hit Subscribe and Like!