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Aluminum foil (2021)

dernocua.github.io

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Re: Aluminum foil (2021)

#54

Post by sigeonpex67 »

codazoda wrote: post #17

I just skimmed and read parts but I really enjoyed reading this. It's like my own handwritten notes which are just stray thoughts about a subject. Maybe I should publish more of those and I love the idea of just musing about a single thing, like Aluminum Foil (though it's very interesting stuff).

[dead]

Re: Aluminum foil (2021)

#55

Post by whilenot-dev »

toast0 wrote: post #43
0-_-0 wrote: post #11

This made me wonder about a 3D printer alternative that builds things by folding a thin sheet of metal into arbitrary shapes instead of extruding filament.

My college had a 'rapid prototyping' machine circa 2000 that worked in paper. Roll out a layer of paper, cut through the top layer, something something glue, roll out the next layer, etc. No reason that couldn't work with aluminum foil.

I can just tell you from experience that aluminum foil is much more fragile than paper, your college might face some difficult challenges in making it work and need to rework their machine. Maybe very lightweight paper comes close, but certainly not the standard 80gsm printing paper.

I created an embossing machine than would emboss aluminum foil with the scratch marks of a teaspoon. Aluminum foil tends to get a fold rather quickly, doing that for 40m was quite a challenge.

The embossing machine: https://postimg.cc/67wkVGBy

The embossing process as GIF: https://postimg.cc/3W6zSqKx

The embossed aluminum foil as GIF: https://postimg.cc/yDh5NY0D

Re: Aluminum foil (2021)

#56

Post by jacobgold »

badc0ffee wrote: post #29

It's non-toxic and food safe, and yet a significant number of people on the internet still act like it's poison that will give you Alzheimer's. I wonder how many of those people touch their lips to the lid of an aluminum beverage can. Or how they might bake a lasagna at home.

You shouldn't use aluminum foil with tomato/lemon/vinegar/brined foods or as "grilling packets" (direct fire/high heat) because of leaching risk.

There's no concern with using aluminum in most cases (with dry/non-acidic foods) but leaching is a real problem with acidic/salty/wet/high eat.

Re: Aluminum foil (2021)

#58

Post by hilariously »

1970-01-01 wrote: post #16

>Alternatively, though, it might be possible to stiffen the foil by making the equivalent of corrugated cardboard out of it, maybe using aqueous boric acid (US$1.70/kg according to Potential local sources and prices of refractory materials) or borax as the glue. The surface tension of water is ample to hold aluminum foil in place until the water dries. Hello Amazon? Billion dollar idea here. This needs more attention…

Cardboard is very recyclable already.

Re: Aluminum foil (2021)

#59

Post by stronglikedan »

kragen wrote: post #57

I wasn't expecting to see Dernocua at the top of HN today with 53 comments. You can download Dernocua as a whole from http://canonical.org/~kragen/dernocua/ if you're interested. I'm happy to answer any questions. (Well, almost any.)

seems like the cert may have expired
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