3D printing software? [tech]

Nov. 24th, 2025 03:51 pm
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[personal profile] siderea
I want a widget that doesn't exist so I might be stuck designing it for 3D printing. I have never done this before. For design software, I gather both Onshape and TinkerCAD are available for free. Anybody with experience have opinions which I should start with? I have never used any CAD program before, but am not new to drafting. OTOH my drafting experience was all about 40 years ago. Open to other suggestions available for the Mac for free.

Also, I don't have my own 3D printer, so I'll be availing myself of various public-access options. But this means the iterative design feedback loop will be irritatingly protracted. Also I might have to pay money for each go round, so I'd like to minimize that. Also I am still disabled and not able to spend a lot of time in a makerspace. But I am a complete n00b to 3D printing and have zero idea what I'm doing. Does anybody have any recommendations for good educational references online about how to design for 3D printing so your widget is more likely to come out right the first or at least third time? By which I mean both print right and also function like you wanted – I know basically nothing about working with the material(s) and how they behave and what the various options are, while the widget I want to make will be functional not ornamental and have like tolerances and affordances and stuff. So finding a way to get those clues without hands-on experience, or at least minimizing the hands-on experience would be superb.
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[personal profile] siderea
Saw this, blew my mind, thought I'd share. Behold, Lençóis Maranhenses:



2025 Oct 28: PBS Terra [pbsterra on YT]: It Looks Like a Desert. But It Has Thousands of Lakes

When I heard in the video how big it was, I turned on satellite view in Google Maps and popped "Lençóis Maranhenses" into the search bar:

Image below cut. Content advisory: trypophobes avoid )

Getting a head of things [gastronomy]

Nov. 21st, 2025 03:09 am
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[personal profile] siderea
The Bostoniensis household's last grocery order included some cucumbers but the delivery service mystifyingly substituted for them a head of cabbage. They were very apologetic when Mr B called to complain, and refunded us the price of the cabbage, so now it's a free cabbage. But it's still here taking up a remarkably large volume of space in our fridge, what with the spherical thing, and it's a week before Thanksgiving.

Cooking a cabbage was not on our plans for this week. But throwing out a perfectly good cabbage seems sad. And I have been complaining about not getting enough veggies to eat. So.

Anybody have a very delicious recipe for cabbage that conforms to the following parameters?:

• Cooked. No raw cabbage.

• Really, really low effort. I am resigned to having to chop the cabbage itself, but maybe minimal other chopping of other veggies or meats. Something where the actual cooking isn't too fussy.

• Not haluski. We love haluski. We have most of the ingredients for haluski. We do not have the time or energy for taking on a project like haluski.

• Not stuffed cabbage. The kind with ground beef and tomato sauce. Neither of us likes it. Possibly because we don't like the taste of cabbage in tomato sauce.

• Not corned beef and cabbage. We love corned beef and cabbage but omg have you seen the price of brisket.

• Relately, maybe no stewing or slow cooking? The smell of slow cooking the corned beef and cabbage is dire, and we don't want to have to flush air we paid to heat. Maybe it would be okay if more heavily seasoned.

• Gotta mostly be cabbage. We have a lot of cabbage to get through.

We like spicy, though it's not required; no cilantro, and probably no coconut. Main dish or side, with meat or without.

Edit: Okay, maybe we'll just buy more cabbages. I am very excited by this harvest of recipes.
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[personal profile] siderea
Canonical link: https://siderea.dreamwidth.org/1886696.html

Hey, Americans and other people stuck in the American healthcare system. It's open enrollment on the state exchanges, and possibly through your employer, so I wanted to give you a little heads up about preventive care and shopping for a health insurance plan.

I've noticed from time to time various health insurance companies advertising themselves to consumers by boasting that their health plans focus on covering preventive care. Maybe they lay a spiel on you about how they believe in keeping you healthy rather than trying to fix problems after they happen. Maybe they point out in big letters "PREVENTIVE CARE 100% FREE" or "NO CO-PAYS FOR PREVENTIVE CARE".

When you come across a health insurance product advertised this way, promoted for its coverage of preventive health, I propose you should think of that as a bad thing.

Why? Do I think preventive medicine is a bad thing? Yes, actually, but that's a topic for another post. For purposes of this post, no, preventive medicine is great.

It's just that it's illegal for them not to cover preventive care 100% with no copays or other cost-sharing.

Yeah, thanks to the Obamacare law, the ACA, it's literally illegal for a health plan to be sold on the exchanges if it doesn't cover preventive care 100% with no cost-sharing, and while there are rare exceptions, it's also basically illegal for an employer to offer a health plan that doesn't cover preventive care.

They can't not, and neither can any of their competitors.

So any health plan that's bragging on covering preventive care?.... Read more [2,270 words] )

This post brought to you by the 220 readers who funded my writing it – thank you all so much! You can see who they are at my Patreon page. If you're not one of them, and would be willing to chip in so I can write more things like this, please do so there.

Please leave comments on the Comment Catcher comment, instead of the main body of the post – unless you are commenting to get a copy of the post sent to you in email through the notification system, then go ahead and comment on it directly. Thanks!

a silly little communicator wishlist

Nov. 13th, 2025 09:46 pm
aleteoryx: A closeup shot of a man with short brown hair and glasses, giving an incredulous look to the camera. (unix twink closeup)
[personal profile] aleteoryx

I hate smartphones!!!!!!!!! I am a big fan of small and silly electronics but the modern smartphone is a devilspawn consumption machine. it is small and serious and seriously unsilly and seriously EVIL!!!!!!!!!!!!!

for a while I've been thinking about what I'd want out of a smartphone replacement device. a seriously silly tiny portable computer of some kind, with support for all manner of communication peripherals. I'm not a hardware person in the slightest so some of this may be talking out of my ass lol. and obviously this whole list is sort of excessive but that's why it's a wish list and not a send it to the build team, David! list


I'm envisioning something modular-ish where there's a central computer unit that can talk to a bunch of peripherals over a bus of some kind.

as far as the main body goes, here's what I'd like:

  • physical keyboard, full qwerty. but like a nice one that feels good to type on. digital diary type shit
  • multi-line text display. 4 rows minimum? but 8 would be nice. ideally this would be an LCD with togglable backlight, but an e-paper screen with some kind of lamp works too. whatever uses the least power and can be had cheaply
  • like I said, pluggable architecture. I want it to be as easy as possible to add peripherals to this thing, or replace them. doing this in a way which avoids a lot of custom fabrication will be difficult.
  • very low active power draw. ideally the device would be effectively turned off 99% of the time, but 100+ hours of user interaction per-charge would be great. battery life will obviously be hampered by a cell module or some such, and this does not take that into account
  • operating system in some kind of minimal high-level environment, like a forth or j2me. this is primarily to facilitate swapping the CPU or other hardware details at any time. a minimal machine code kernel should take care of details like bootstrapping the system, and provide primitives for hardware interaction. the high-level code should not rely on implementation details of the CPU or kernel.
    • following from this, a complete programming environment. once the device is to a point of bare usability, I want to be able to do all OS development on the system itself.
  • around 1mb of RAM. I can't imagine honestly needing more for the purposes of this device
  • at least 16mb of primary flash storage. this is for user code. the kernel/interpreter will live on an eeprom or some such and boot from this.
  • at least 1gb of secondary flash storage. this is primarily for scrollback, and would ideally be user-swappable (CF or SD card?)
  • a reasonable amount of weatherproofing
  • decent enough audio hardware, and a fast enough bus, to be able to handle voip and cell calls

and then, the modules themselves!

  • the obvious inclusions are bluetooth, wifi, and cell. the reasoning for the second 2 is manifest, the first is primarily for connecting to an earpiece of some kind. after all, this device /will/ do calls.
  • lora, specifically for meshtastic purposes. having my own gateway that relays messages from various text protocols over it seems like a good idea, with cell internet and wifi as fallbacks. this is the ideal communication system due to the ultra-low power draw.
  • various forms of serial, though this might be better accomplished in software with GPIOs. having the device able to operate as a dumb terminal or UART probe seems extremely handy.
  • irda. because i mean. hhghhghgrugnoerungnngnnnnghhhhhh

so yeah that's it! be interested to hear any additions or comments. I'm probably at least a year out from even beginning to make this thing, but it's nice to write down ideas.

I've been ~aleteoryx, toodles

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