antlion

antlion , 16 hours ago to Ask Lemmy in I would like to start a simple business related to 3D printing, reverse engineering and 3D scanning. What are common pitfalls of first time entrepreneurs?

Well anyone can 3D print something, but it’s the modeling of a printable object that is your skill. However modeling and designing are two different things.

If I had your equipment and skills right now I would start printing bathtub jet plugs. Convert a jetted tub into a non-jetted. Probably only a few different brands and designs to cover.

Aside from that, I’d get into mold making. You can 3d print a mold, or even a mold of a mold. Or a mold of a mold of a mold. Then you can cast objects in metal or ceramic, or silicone or even plastic (haha) or other materials that can be a liquid. Way more interesting than plastic shapes. Plus molds can be used many times.

As far as the business goes? No idea. Start by making useful objects that people want to buy. But that’s kind of a different skill of “inventor”.

antlion , 1 day ago to Technology in [NightHawkInLight] DIY Supermaterial Could Save You From Heatstroke: Salt based PCMs

I was just thinking about this. Love these videos. Cooling of a solar panel is a good application, as long as it gets cold enough for long enough to re-solidify at night.

An alcohol/NaCl solution with a stabilizer can make an ice pack that freezes colder than water. That could be used to keep ice cream frozen in an ice chest.

It would be cool to have recipes for a few different temperatures. There’s a German company Qool Products that sells PCM temperature elements (ice packs), at a variety of temperatures, to store ice cream up to red wine/cellar temp in their ice chest. With some trial and error I guess we could now make our own!

antlion , 6 days ago to Cool Guides in A cool guide to heat absorption between different colored T-shirts

Well if protection from solar heat is the goal, it will be hard to beat the “chrome dome” or reflective parasol. Sometimes the ground reflects quite a bit of heat from below, like snow. Then I guess a shirt might out-perform a parasol.

antlion , 8 days ago to Cool Guides in A cool guide to heat absorption between different colored T-shirts

Google also says to put glue on your pizza.

antlion , 8 days ago to Cool Guides in A cool guide to heat absorption between different colored T-shirts

It seems it’s still an active debate and area of research, but the answer is more complex than wavelengths and emissivity. If you want to know whether black or white is cooler in the sun, it depends on: the breathability or knit, the amount of UV hitting the skin, the amount of skin contact with the fabric, wind speed, relative humidity, how the fabric wets and wicks moisture, and more. We could look at a black trash bag and say, well it’s transparent to IR, and it blocks the visible spectrum, therefore it’s a good shirt material to keep one cool. And obviously that would be wrong. In the same way it’s wrong to say: a white shirt feels less hot when you touch it, therefore it keeps the wearer cooler.

antlion , 9 days ago to politics in The Christian right is coming for divorce next

Maybe they should make it super bureaucratic and you have to pay to renew your civil union every 7 years, otherwise it dissolves.

antlion , 9 days ago to Cool Guides in A cool guide to heat absorption between different colored T-shirts

Body emits infrared radiation. Sun does too. They make foil-lined jackets to reflect this heat. White shirts do it too, as shown in the image.

antlion , 9 days ago to politics in The Christian right is coming for divorce next

The solution is simple, as it is for gay marriage. Marriage is not recognized by the state/government.

antlion , 9 days ago to Cool Guides in A cool guide to heat absorption between different colored T-shirts

Body puts off heat too. White reflects it back, black lets it escape.

antlion , 10 days ago to Progressive Politics in ‘It’s unbearable’: in ever-hotter US cities, air conditioning is no longer enough

Need to use Heat Index or Wet Bulb temperature. Dry heat is not the same as humid heat - the latter contains way more heat energy. In arid regions air conditioning, or water, will prevent most heat-related risk into the future. It’s the humid regions that will suffer in heat waves.

antlion , 10 days ago to California in Scorching schoolyards: California groups want more trees, less asphalt at schools

The best time to plant a tree is 30 years ago. The next best time is now.

antlion , 10 days ago to Selfhosted in Immich public roadmap

I would probably do a one-time purchase but I don’t do subscriptions.

antlion , 11 days ago to Selfhosted in Immich public roadmap

Piwigo is more like a shared gallery. Users create album/folders and upload individual photos, which other users can access. Piwigo has poor support for videos and no support for Live Photos.

Photoprism has only a single user for the free tier. It supports Live Photos and videos, and individual photo uploads. It does facial recognition tagging.

Immich supports video/Live Photos, facial recognition, and has multiple users, but it expects a full backup/synchronization (not individual photos). Sharing between users is manual, not automatic or permissions-based like Piwigo. Each user has access only to their own backups or shared albums.

In summary, I think Piwigo is the simplest to set up and use, but it doesn’t do much beyond photos - it’s a simple shared gallery. Photoprism is good and stable, but you have to pay a subscription for multiple user accounts. Immich is rapidly developing, which means things will break, but also it has the most features. My only issue with Immich is that I don’t want to use it as a backup - only as a “best of” shared gallery. While it’s possible with Immich, I would have to maintain an Immich album on my phone, and sync only that, and I would have to set up shares with other users manually.

antlion , 11 days ago to Ask Lemmy in What would you do with your time if you didn't have to work to meet your food, housing, and healthcare needs?

I would be an inventor. I would be an explorer. I would be a teacher. I would be an artist. I would be a musician. I would be an entertainer. I would be a builder.

antlion , 11 days ago to Futurology in Google DeepMind researchers published a new paper arguing that open-endedness — the ability to create new, learnable ‘artifacts’ — is the key to achieving artificial superhuman intelligence (ASI).

This covers the “curious” part. But as Musk said it must be both curious and truth-seeking. You won’t get super intelligence from curiosity and creativity, you’d get an art major. Intelligence needs to be discerning and yearning for truth and understanding.