u/Calm-Scientist8126

https://reddit.com/link/1siob87/video/hc1382f2clug1/player

I've been working on this for so long. Trying to get 9 bar in an areopress and have flow control. I started with levers, but then found Mikki's DIY Obsessions on YouTube and switched to the bike pump. I just want to show it off now its finaly working, so without further ado, my completely manual, pneumatic, flow control, espresso machine powered by a bike pump...