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DiyPresso: DIY Espresso Machine

diypresso.com

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Re: DiyPresso: DIY Espresso Machine

#282

The more I think about the more I feel that this is the wrong solution to the problem. Disclaimer: I'm doing a small open source espresso controller project, check it out if you're interested, but it's not ready for prime time yet: https://github.com/variegated-coffee . My thinking is that this machine appeals mostly to people who already has an espresso machine. It's not particularly technologically advanced. It's a…

An E61 is the wrong choice. They have fluidic mechanical pressure ramp system. A modern machine ought to have adjustable computerized pressure profiles.

Does this additional complexity do anything bad to reliability ?

Re: DiyPresso: DIY Espresso Machine

#283

The more I think about the more I feel that this is the wrong solution to the problem. Disclaimer: I'm doing a small open source espresso controller project, check it out if you're interested, but it's not ready for prime time yet: https://github.com/variegated-coffee . My thinking is that this machine appeals mostly to people who already has an espresso machine. It's not particularly technologically advanced. It's a…

I rent a place with an espresso machine, but the next place I'm moving to doesn't have one. I absolutely love tinkering and open source. I like coffee, but I'm not crazy about perfection. I value the experience of building it and owning a self-built thing highly.

This is perfect for me. There must be dozens of people like me. Dozens!

Re: DiyPresso: DIY Espresso Machine

#284

If you are passionate about Espresso, I really suggest to try Kamira ( https://www.espressokamira.com/ ). It's very easy to make and maintain and you can have espresso at home like the one in the bar. I am Italian, so coffee is almost a religion for us

Looks cool, but how does it actually differ in functionality from a regular mokka pot? Where is the pressure coming from?

Re: DiyPresso: DIY Espresso Machine

#285

Earlier quoted context omitted.

The cup itself may be aluminum, but there is a plastic lining on the inside of the cup and on the inside of the lid that keeps the coffee from coming into direct contact with the aluminum--just like in canned foods

I hate to defend Nestlé, but they claim that the coating is shellac. https://easytoespresso.com/are-nespresso-pods-safe/

I stand corrected!

Re: DiyPresso: DIY Espresso Machine

#286
post #75

Earlier quoted context omitted.

To chime in on the litany of reasons why this is not a good idea--sifting boiling water through plastic is not safe for consumption as plastic nano and micro-particles will leech from the plastic into the liquid. This happens by design when using these pods, meaning you are getting a small serving of plastic every morning, alongside your coffee. What a moronic design.

While it's likely not wrong that these things produce a bunch of suspended microplastics in your drink, we actually still don't know how unsafe microplastics are so I don't think you can outright state it is unsafe (not saying we shouldn't be worried about microplastics, I certainly am looking forward to more research on the topic to determine their impact because I am also worried, but it's just fear mongering to ca…

Safety is a social determinant, risk is an objective measure. We have not been able to adequately quantify the risk associated with the ambient level of microplastics in the environment and in our bodies. But we have an overwhelming amount of data that risk does indeed exist:

https://link.springer.com/article/10.1007/s10311-024-01727-1

Re: DiyPresso: DIY Espresso Machine

#287
I’m kind of late to the conversation, but one requirement most home users overlook is using lead free parts.

The brass in most high end heads slowly leaches lead into the boiler water. Arguably, this doesn’t matter at a coffee shop, since the boiler turns over the water in a few hours. At home, it takes a month or so.

Anyway, I settled on a Flair Classic lever machine (one moving part, all stainless steel and silicone gasket on the water contact path), and previously, a PID kettle.

It turns out that water boils at espresso temperature at ~ 2000 ft, so when the PID kettle died, I replaced it with an antique enameled cast iron kettle (my induction range heats it up ridiculously fast).

I boil the stainless espresso machine head in the kettle with the espresso water, which achieves the same thing as continuously circulating hot boiler water through it in commercial espresso machines.

I put the money I saved on the machine into a small commercial-grade burr grinder (like for the decaf beans at a coffee shop).

I haven’t noticed any consistency issues vs. a $3500 machine at work. That thing can crank out four espressos in parallel all day long, but I don’t need that at home.

Re: DiyPresso: DIY Espresso Machine

#288
post #125

Earlier quoted context omitted.

Should I mention audiophiles? The first feeling when you turn on a new system, it will never come back, until you get an arguably better system... And the rabbit hole is deep. How much did you pay for grinder? I think this is worth (for espresso lover) far more than 1250 euro machine: https://www.youtube.com/watch?v=aTFsBqhpLes&list=PLxz0FjZMVO...

Audiophiles are a bad analogy since you can setup a blind taste test of coffee equipment. And different people will make the same identifications. Which suggests that we all tasted the same thing. Where as you can’t tell the difference between cables. I’m all for being skeptical, especially with something as subjective as taste. But it always amuses me that people never bother to check their skepticism. Has it ever o…

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Re: DiyPresso: DIY Espresso Machine

#289

Earlier quoted context omitted.

An E61 is the wrong choice. They have fluidic mechanical pressure ramp system. A modern machine ought to have adjustable computerized pressure profiles.

Does this additional complexity do anything bad to reliability ?

Yes. E61s are full of springs and an orifice and a valve body that ramps the pressure mechanically. This is not only overly complicated but it exposes the brew water to dissimilar metals and adds a ton of surface area to shit up with rancid coffee oil. A group with a shorter water path is better since we can easily have control over the pressure with a computer.

Re: DiyPresso: DIY Espresso Machine

#290
post #284

If you are passionate about Espresso, I really suggest to try Kamira ( https://www.espressokamira.com/ ). It's very easy to make and maintain and you can have espresso at home like the one in the bar. I am Italian, so coffee is almost a religion for us

Looks cool, but how does it actually differ in functionality from a regular mokka pot? Where is the pressure coming from?

The physical principle is the same as the moka pot, the water boil in the tank and the steam pass through coffee. The main difference is that in the moka the steam flows from down to up and in the kamira from up to down and it's not going to burn the coffee dust. I can assure that the coffee with kamira is exactly like the one that you can taste in a bar.
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