DIY Espresso (www.fourbardesign.com)
from tedu to espresso@infosec.pub on 23 Dec 2023 17:56
https://azorius.net/g/espresso@infosec.pub/p/21k7JTlRk1g4XK417v-DIY-Espresso

High pressure, high forces, long lever arms...all of that meant heavy and strong (read: expensive) parts which I was not looking forward to having to fabricate. Instead, I settled on the simpler idea of harnessing the power of compressed gas. Instead of using a high mechanical advantage lever to push a piston, compressed CO2 would be dispensed from a small and inexpensive 12g or 16g cartridge which would then generate the requisite pressure to properly extract espresso. This concept is not actually novel; both an unsuccessful kickstarter and a now-defunct handheld espresso maker (with a fanatical user base) employed this mechanism.

#espresso

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hi_its_me@lemmy.world on 23 Dec 2023 19:00 next collapse

That was actually a really enjoyable read.

AdamEatsAss@lemmy.world on 23 Dec 2023 19:36 next collapse

It would be really cool if you could use a compressed air tank that you can recharge with a bike pump. Something like this has a max of 200psi and is refillable with a shrader valve. More upfront cost but but you don’t have to buy CO2 cartridges.

AllNewTypeFace@leminal.space on 23 Dec 2023 21:09 collapse

You don’t even need an external bike pump; there are pocket espresso machines which use a built-in pump to fill a pressurised reservoir.

AdamEatsAss@lemmy.world on 24 Dec 2023 12:07 collapse

I think part of the appeal of the espresso maker this guy DIYed is that it has no pump/electrical components. Less points of failure and cheaper to make, cost seems to be a driving factor in his design. A bike pump is a fairly common thing for someone to own.

01189998819991197253@infosec.pub on 23 Dec 2023 22:13 collapse

This is one of the coolest projects I’ve seen! Nicely done!