Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

CT scans of coffee-making equipment

scanofthemonth.com

Post reply on HN
Print view View original

21–30 of 178 posts

Re: CT scans of coffee-making equipment

#21

Post by etrautmann »

switchbak wrote: post #12
jacobwilliamroy wrote: post #10

Earlier quoted context omitted.

You just reminded me there's a video on youtube of a guy literally tearing a Juicero apart and it's hilarious: https://www.youtube.com/watch?v=_Cp-BGQfpHQ

Probably one of AvE's best videos. I was just chatting about the peak Silicon Valley insanity that was Juicero yesterday. That thing was built like a Bugatti. And he's like "why not use a roller instead of a press??".

Even when first announced, it became a meme among friends Juicero (and Ubeam) were peak Silicon Valley.

Re: CT scans of coffee-making equipment

#22

Post by cjrp »

kwhitefoot wrote: post #16

Interesting images and a very well put together page. But a little off topic, I was struck by this: > With the powerful 1200 W heating element A typical European kettle is at least 1800 W, comfortably less than the power deliverable from a 10 A, 230 V circuit. A typical UK kettle would be more like 3000 W, such as this one (it seems that all the kettles on that website are 3 kW): https://www.argos.co.uk/product/93631…

> …the kettle reaches optimal temperature very quickly — in under three minutes

That’s too long to wait for a brew.

Re: CT scans of coffee-making equipment

#23

Post by bowmessage »

angst_ridden wrote: post #20
bowmessage wrote: post #3

Incredible scans! > Removing used coffee immediately after brewing and storing the AeroPress with the seal pushed all the way through the chamber (as shown) can help minimize wear by reducing compression to extend the gasket’s life. But, that's not what's shown. Pushing the gasket all the way through isn't possible unless the filter head is removed.

Proper storage is just pulling the plunger out entirely. Every few years, soaking the rubber seal in mineral oil overnight then cleaning will restore flexibility (otherwise it shrinks over time, reducing the quality of the seal). Unrelated: using paper filters is less eco-responsible than the gold foil filter, but makes for better coffee.

Why is pulling the plunger out entirely necessary for proper storage? I always just push mine all the way through so the rubber isn't under any tension.

Disagreed on the paper filters, I personally enjoy using a metal filter to ensure the oils from the coffee beans are not filtered out. I suppose it is all subjective.

Re: CT scans of coffee-making equipment

#24

Post by cjs_ac »

kwhitefoot wrote: post #16

Interesting images and a very well put together page. But a little off topic, I was struck by this: > With the powerful 1200 W heating element A typical European kettle is at least 1800 W, comfortably less than the power deliverable from a 10 A, 230 V circuit. A typical UK kettle would be more like 3000 W, such as this one (it seems that all the kettles on that website are 3 kW): https://www.argos.co.uk/product/93631…

UK plug sockets are rated at 13 A, giving a maximum power rating of 2,990 W. Kettles are consequently amongst the highest-drawing household appliances in the UK.

Back when there were only three television channels, the National Grid planners used to pore over the Radio Times, looking for popular programmes like the Morecambe and Wise Christmas Special (21 to 28 million viewers in 1977), so they could prepare for the demand surge of the entire nation putting the kettle on at the end of the programme.

Re: CT scans of coffee-making equipment

#25

Post by tomasGiden »

Related, but not as fancily presented, the startup I’m at just scanned a coffee bean in our micro-CT that we developed. It’s especially good for low-Z (like carbon and silicon) based samples in contrast to normal X-Rays that see right through it (think x-ray images of a broken arm where the tissue is invisible).

https://exciscope.com/applications/food-and-packaging/

Re: CT scans of coffee-making equipment

#26

Post by jacobwilliamroy »

switchbak wrote: post #12
jacobwilliamroy wrote: post #10

Earlier quoted context omitted.

You just reminded me there's a video on youtube of a guy literally tearing a Juicero apart and it's hilarious: https://www.youtube.com/watch?v=_Cp-BGQfpHQ

Probably one of AvE's best videos. I was just chatting about the peak Silicon Valley insanity that was Juicero yesterday. That thing was built like a Bugatti. And he's like "why not use a roller instead of a press??".

I think they were trying to turn food into a subscription service? Having complete control over a person's food supply sounds like an 8 million dollar idea. It still sounds like a really bad idea, but I think that is how Juicero was pitched to investors, rather than a spaceship that squeezes bags marginally worse than a person can.

Re: CT scans of coffee-making equipment

#27

Post by OJFord »

totoglazer wrote: post #4

Such a cool idea, and attractive images. However I’m kind of disappointed they mostly picked things that are fairly simple, transparent or openable, and look exactly the way you’d expect them to inside. I assume some combination of cost & size drove this. A vintage espresso machine with 1 group head would be more novel, for example.

And even that you essentially disassemble them and see how they work through using them. I suppose a lot of people only know or use one or two ways and may be completely unfamiliar with others though.

Re: CT scans of coffee-making equipment

#28

Post by [deleted] »

kwhitefoot wrote: post #16

Interesting images and a very well put together page. But a little off topic, I was struck by this: > With the powerful 1200 W heating element A typical European kettle is at least 1800 W, comfortably less than the power deliverable from a 10 A, 230 V circuit. A typical UK kettle would be more like 3000 W, such as this one (it seems that all the kettles on that website are 3 kW): https://www.argos.co.uk/product/93631…

[deleted]

Re: CT scans of coffee-making equipment

#29

Post by quartz »

cjs_ac wrote: post #24
kwhitefoot wrote: post #16

Interesting images and a very well put together page. But a little off topic, I was struck by this: > With the powerful 1200 W heating element A typical European kettle is at least 1800 W, comfortably less than the power deliverable from a 10 A, 230 V circuit. A typical UK kettle would be more like 3000 W, such as this one (it seems that all the kettles on that website are 3 kW): https://www.argos.co.uk/product/93631…

UK plug sockets are rated at 13 A, giving a maximum power rating of 2,990 W. Kettles are consequently amongst the highest-drawing household appliances in the UK. Back when there were only three television channels, the National Grid planners used to pore over the Radio Times, looking for popular programmes like the Morecambe and Wise Christmas Special (21 to 28 million viewers in 1977), so they could prepare for the…

Related HN discussion about UK power demand surges due to millions of kettles being simultaneously turned on during TV breaks: https://news.ycombinator.com/item?id=5018560

Re: CT scans of coffee-making equipment

#30

Post by chongli »

gaudat wrote: post #14

I thought X-rays do not pass through metal? Like it shows up opaque in clinical images. Suprised that they got a scan of the moka pot. Truly amazing stuff.

X-rays are used a lot in non-destructive testing for welding and also in civil engineering to look inside concrete and rebar!
Post reply on HN