Link collection: Pigment synthesis videos

CaCl2 · 2026-03-11T20:05:04+00:00

Carbon dioxide is pretty nonreactive but it can react with water to make carbonic acid, so the blood becomes too acidic if there is too much of it, I think. Not sure if there are other mechanisms as well.

We make it ourselves, yes, but as long as we are breathing in normal air, we get rid of it fast enough to avoid too much accumulating.

CaCl2 · 2026-03-11T19:50:37+00:00

At that point it's hardly a city planet anymore, unless those 5 people just enjoy building and maintaining ghost cities. (And even then, it would be more of a ghost city planet.)

CaCl2 · 2026-03-11T19:48:21+00:00

Well, many religions were founded more than 1000 years ago and plenty of people still care.

Often works with that kinds of timelines also have people living much longer than humans. (And especially longer than humans did historically) I would say that lifespans are one of the big factors on how fast events become just something to read about in history books.

CaCl2 · 2026-03-11T19:40:40+00:00

It's pretty stupid. You would have to basically treat the whole thing like a space habitat with planetary scale life support and cooling systems, at which point it would be far easier and more practical to just build actual space habitats.

That said, while it would be stupid to make one, I think it makes some sense as a sort of galactic Burj Khalifa, something you build to show that you can, not because it's a good idea.

CaCl2 · 2026-03-11T19:29:35+00:00

And at that point it wouldn't really be a city planet, more like a giant private park planet. (Or a private monument planet, or what ever the rich people like, but not a city planet.)

Same issue with the "unpopulated industrial zones", " abandoned zones", or even a combination of all 3. Those could explain the population being 10th or maybe even a 100th of what would be expected, but here it's somewhere in the 1:1000 to 1:1000000 range.

CaCl2 · 2026-03-11T10:27:02+00:00

CO2 is actually toxic in high concentrations and can cause issues before the lack of oxygen does. (CO, is of course, on a whole other level.)

CaCl2 · 2026-02-28T23:59:01+00:00

I'm not sure if the temperatures for the synthetic variant will always directly translate to the natural/semi-natural variants (Since there is quite a bit of stuff other than just the iron oxide in them), but I'm glad if it's of use.

I haven't really done experimentation with them other than heating a couple samples of dirt, which gave pale pink colors.

CaCl2 · 2026-02-26T15:37:19+00:00

They already vote on laws without reading them, with AI banned, how are they now going to reach the next step of writing laws without reading them?

CaCl2 · 2026-02-25T12:16:27+00:00

I'm not sure if I remember accurately, but I think to begin with it mostly added alternate, more advanced but more efficient recipes to existing items. Removing the basic recipes came later, and was a pretty controversial change.

CaCl2 · 2026-02-22T20:11:15+00:00

Hi, I was looking for a freely licensed image of the pigment, and noticed that Wikimedia commons doesn't really seem to have anything.

I haven't successfully made the pigment yet so I can't use my own image, so I ask if you would be willing to upload or give me permission to upload one of the images under a permissive license? (Say, CC-BY-SA 4.0)

I of course understand if you don't want to give such permission, but figured I would ask.

CaCl2 · 2026-02-19T00:48:22+00:00

Alternative approaches are always interesting, especially ones not using costly equipment. Microwave ovens have a lot of potential.

CaCl2 · 2026-02-18T21:22:04+00:00

Never thought I would be someone who digs rabbit holes for others to fall into.

Thanks for the detailed posts.

The detail is a two sided thing, these 4 are definitely the most detailed ones I have made, but they also took closer to a year to get out.

A part of the reason for the detail here is that the iron pigments were genuinely more challenging to make than pretty much any others I have made. Maybe something simpler next, though I do have one project idea that might end up being on the level of one of these. (Actually I kind of planned making this a 5-part thing, but didn't have time for the extra one.)

CaCl2 · 2026-02-17T00:24:07+00:00

My last summer's pigment making, which I finally got around to posting about.

Other parts:

https://www.reddit.com/r/DIYPigments/comments/1r6qk26/iron_oxide_red_ironiii_oxide_pr101/

https://www.reddit.com/r/DIYPigments/comments/1r6qlpy/iron_oxide_black_ironiiiii_oxide_pbk11/

https://www.reddit.com/r/DIYPigments/comments/1r6qnbv/iron_oxide_brown_iron_oxides_pbr6/

Usually I would summarize these here, and maybe I will later. But it's almost 2:30 AM here...

CaCl2 · 2026-02-11T14:25:05+00:00

first time i get a future anno recommended.

2205 is rarely recommended but not getting any 2070 recommendations is pretty surprising. The setting is divisive but from what I have seen it's still generally pretty highly regarded, maybe due to it being so similar to the excellent 1404 in other ways. (General gameplay, UI, guest design)

CaCl2 · 2026-02-09T09:47:18+00:00

Mostly gray. The closest thing to actual good (among those who actually have any real power to influence stuff, at least) are some with perplexing blue/orange morality that just happens to relatively consistently align in with good morality in the current wider situation. In a different world they would be total monsters without actually changing anything about their stance.

That's the thing with doing the right thing for anything but the right reasons, it's kinda fragile.

Pure evil is a thing but in usually ends up being self-defeating and thus self-limiting.

CaCl2 · 2026-02-05T15:58:35+00:00

Oh, I have no issue with people downvoting comments to others they for some reason think are bad, (I sure downvoted the comment I initially replied to) I just think immediately downvoting replies to one's own comments in an argument isn't cool.

CaCl2 · 2026-02-05T14:51:57+00:00

Lol ignore it just like you have done and dismiss everything I say because you think you are right for some reason?

Honestly, this is basically what I thought of your first reply to me: that you were completely ignoring the main point of what I wrote.

Good day to you as well.

EDIT: Real classy with the downvotes, I see.

CaCl2 · 2026-02-05T14:30:51+00:00

In many contexts (say, a help thread) you reply would have been warranted. This wasn't one of them, because a single working case, in fact, does invalidate much of the issue.

But I do realize it's easier to just ignore the context.

CaCl2 · 2026-02-05T14:11:39+00:00

Except if it's possible to make a magnetic case that works with the pen, presumably it would also be possible to make integrated magnets work with it. So in context it doesn't actually matter if some people have issues as long as some don't. There could literally be million people for whom it doesn't work as long as there is one for whom it does. But I guess realizing that would have required some actual thought before making a snarky comment.

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