TootSweet
@TootSweet@lemmy.world
- Comment on Covid Conscious - A support community for those still trying to prevent the spread 21 hours ago:
That’s… a good point. When I make communities, I usually try to err on the side of more general rather than more specific (just because Lemmy doesn’t have quite the userbase of… that other site we never speak the name of), so in this case, I probably should have thought to name it in a way that limited it to just COVID.
But now, I’ve up and named the community. I’d be fine with making it clear in the sidebar that consciousness about the spread of other diseases is entirely welcome, but I don’t think I can change the name (like, the URL) of the community.
But, honestly, I’m also down with just making a whole new community and deleting this one. And, to be fair, I haven’t looked to see if a community like that already exists.
- Submitted 22 hours ago to newcommunities@lemmy.world | 3 comments
- Comment on A guide for our friends outside the U.S. 1 day ago:
Lucky.
- Comment on A guide for our friends outside the U.S. 2 days ago:
Back when I took trigonometry, they taught me positive was counterclockwise.
- Submitted 2 days ago to [deleted] | 29 comments
- Comment on People are utterly insane 3 days ago:
Followup question.
“As opposed to what?”
If everyone is “insane”, what would a “not insane” person look like if one hypothetically did exist?
- Comment on People are utterly insane 3 days ago:
All but you?
- Submitted 6 days ago to showerthoughts@lemmy.world | 39 comments
- Comment on Goals 6 days ago:
Just think how many pounds he’d have gained if he hadn’t been on Ozempic.
- Comment on My reaction when there's a new Star Trek show for pre-schoolers 1 week ago:
Source? Like is there seriously a Star Trek series aimed at young kids coming?
- Comment on Is there no good inexpensive CAD software? 1 week ago:
Yes! This so much.
I am entirely convinced that one of the more underserved niches in software is domain-specific languages for doing traditionally-mousey/clicky/GUI things. I’m so convinced of that that I’ve written just such a DSL and am actively working on a second one.
About the only really good examples of that that I know of are OpenSCAD and Graphviz. (And I guess the one I wrote.) I’ve love to know about more. (And, no, libraries that make GUI-sort-of use cases easier in some general purpose language don’t count. There’s really something about having syntax/builtins/standard library custom made specifically for the use case that I’m quite convinced has major benefits to overall usability.)
About OpenSCAD specifically, I also have some nit-picks about the language. There are cases where I’ve written code in other languages that outputs OpenSCAD code specifically to get around some limitations. (There’s one project I’m working on and haven’t Open Sourced yet that just begs so hard for maps/dicts/string-keyed-composite-types. And the ability to use modules as values. (Like, making it more of a “functional” language… or rather a “moduleal” language.)) But like you, none of that detracts enough to make me not love OpenSCAD.
- Comment on Democracy Now! - Posting articles from independent global news source Democracy Now and acting as a comment section for the articles. 2 weeks ago:
Good stuff. If I’m being honest, I’ve kindof felt a bit “out of the loop” on general “news” since quitting Red…acted. I’m glad to see more news here, and Democracy Now! is a fantastic news source.
Not to say I only ever come to Lemmy for news. I do visit news sites sometimes, and Democracy Now! is one of my most preferred sources. Still, though, it’ll be good for DN articles to show up in my Lemmy feed.
- Comment on Any ideas as to what this is all about? 2 weeks ago:
Shit man. I laughed out loud and my mom is right over there. ->
I had to make something up about what I was laughing at.
- Comment on Pirates are just hyperindividualized, privatized navies engaged in a competitive market with one another so how can they be worse than navies according to the logic of capitalism? 2 weeks ago:
By George, I think OP’s got it.
- Comment on [deleted] 2 weeks ago:
“A friend”, huh?
I’ll let
youhim know when I figure it out. - Comment on [deleted] 3 weeks ago:
- Comment on What are the most useful things you've printed? 3 weeks ago:
So, the one I used appears to have been removed from Thingiverse in the meantime, but I’m pretty sure it was V1 of this (which has been remixed a couple of times by someone else and is up to V3). It is a very tight fit, though. (Like maybe the original designer left zero tolerance.) If I had it to do again, I’d go for a different one, but I’d guess probably V2 and V3 have resolved the way-too-tight fit issue.
I made a couple of things myself for mounting my Joycon charger on the wall. (Definitely improvements that could be made to the wall mount one. Conical holes for the screw holes for one. But it does the job.)
- Comment on What are the most useful things you've printed? 3 weeks ago:
My washing machine broke. Wouldn’t drain. I took it apart and realized it was going to be a huge pain to fix if I didn’t drain it first, but it wouldn’t drain on its own. So I designed and printed an adapter that would let me run the pump that drains the washer from my cordless drill. PLA isn’t the strongest material, so I went through like 3 of them draining the washer, but it worked fantastically. Very simple to design and a quick print. Big payoff.
Aside from that, wall mounts for my Nintendo Switch and accessories as well as a wall mount for my NAS solution, a shield for the face of my alarm clock so it didn’t shine bright digital-clock LED light in my face all night (but I could move it aside and check the time), mounts for SAD lamps in convenient places. Most of what I print is custom-designed stuff for utilitarian purposes.
- Comment on If copyright on a work expired immediately after death, would be that a bad or good idea? 3 weeks ago:
Anything to shorten it sounds good to me.
So say we all.
In the U.S., recently, GOP Senator Josh Hawley, one of the speakers who helped incite the January 6th insurrection, introduced a bill to make the term of Copyright 28 years with optionally one renewal for an additional 28 years.
And, it’s so weird to me that I could agree with him on anything really.
Mind you, he introduced that bill in an effort to punish Disney for being too “woke”, but I’d let the MAGA nuts use such a bill as an opportunity to crow for a few minutes about their victory over strong woman protagonists or whatever if it got us more reasonable copyright terms. (And honestly that’s too long, but it’s a hell of a lot better than the bullshit we have now.)
Also, fuck Sonny Bono.
- Comment on If copyright on a work expired immediately after death, would be that a bad or good idea? 3 weeks ago:
Not in the U.S… For work-for-hire, It’s 95 years after publication. For works owned originally by a lump of flesh, blood, and bone, it’s 70 years after the author’s death.
- Comment on What’s even the appeal of Linux? 3 weeks ago:
I’m glad I noticed what community this was posted in before I responded.
- Comment on Computer Science, a popular college major, has one of the highest unemployment rates 3 weeks ago:
My employer considers developers, infra, SRE, PC Support, even QA all to be part of the “IT department”. I’ve always used the term “IT” to just cover any specifically “tech” sort of function. As opposed to, say, finance, sales, HR, operations, etc.
- Comment on Ender 3 v2 and new to 3D printing 3 weeks ago:
So, basically, when you auto-home, that lets your printer calibrate itself with regard to the position of the print head on the X (left-right), Y (forward-back), and Z (up-down) axes, right? For each axis, it just keeps moving in the negative direction until it hits a switch. (An “endstop”.) When it hits the endstop, it considers that “zero” for that axis.
For the Z axis specifically, you have a couple of different options where you can put that switch. You can put it on the frame of the printer and position it such that when the print head moves down, the bar that the print head is on hits that switch at roughly the right place. That’s a “Z-endstop”. Or, you can put the switch on the print head so that it can be moved not only up and down but left and right and forward and back. That’s a “Z-probe”. (The “CR-Touch” is a specific brand of Z-probe sold by Creality.)
With a “Z-probe” your printer can take Z-axis calibration values not just for the arm that the hot end rides back and forth on, but for multiple different spots on the bed. (Typically in a grid pattern.) So, for instance, it can check the front-right corner of the bed, the front-center, front-left, middle-right, middle-center, middle-left, back-right, back-center, and back-left. Once it’s got values for all those spots, it can do some math to get a good approximation of the “shape” of the bed.
Your bed ought to be close to flat, but typically beds – or at least stock beds; again, I’m not sure about the glass beds – will be subtly parabolic or hyperbolic or something. (Like, shaped like a bowl or a hill or a Pringle chip or some such rather than truly flat.) So if you have a Z-endstop and can’t do calibration at multiple points on the bed, then your printer can only act under the assumption that the bed is flat. If your bed is actually (for instance) bowl-shaped, then the print head will be closer to the bed when the print head is far to the front-right, back-right, front-left, or back-left than it is when the print head is closer to the center. In that case, the best you can do is just kindof manually calibrate your Z-endstop offset until you’ve got the most reasonable compromise between too far from the bed when you’re near the center and too close when you’re near the extremities.
(Sidenote: It’s not 100% true that you can’t get your printer to account for bed curvature if you only have a Z-endstop rather than a Z-probe. From what I’ve heard, there are ways to manually “probe” your bed to get figures for the shape of your bed and then give those figures to your printer’s firmware to get your printer to account for bed curvature that way. But it’s a big pain and may have to be redone a lot. It’s been a while since I’ve looked into that option, but I think it may also have required rebuilding the firmware and stuff. As I said, big pain.)
But with a Z-probe, the “auto-leveling” process, when it probes the bed in a grid, it can build a model of what shape the bed really is. And then as it prints, it can follow the curvature of the bed as the print head is moving in the X and/or Y direction in order to stay a very consistent distance from the bed, rather than getting further or closer to the bed (or perhaps it’s better to say the bed is getting closer and farther from the print head) as the print head passes over “hills” and “valleys”.
When your print head is too far from the bed, it doesn’t adhere well and there’s increased risk of the part coming off the bed mid-print. When your print head is too close to the bed, you run the risk of underextrusion, clogs, and first layer expansion. But with a Z-probe, it’ll be better at making sure you get the best of both worlds, and not just on part of your bed. On all of your bed.
The Ender 3 V2 appears to come with a Z-endstop, not a Z-probe. (Just looking at the image on Creality’s official page.) So if I got an Ender 3 V2, I’d add a CR-Touch immediately. (That said, again, the glass beds may have less issue with bed curvature, so it might not be so worth it with your glass bed. If you’re successfully using most to all of your bed and not having adhesion issues or first-layer expansion, there’s definitely no need to worry about it. But it wasn’t until I got a Z-probe that I understood just how reliable my printer could be and how little first-layer expansion I could expect from it.)
One thing to note. Bed curvature with a Z-endstop won’t matter so much once you’re a few layers in. It’ll cause issues with the first two or three layers, but by the time you’re up to five or so layers, it’s not really an issue any more. Most of the issues I had with bed curvature with a Z-endstop before I got my second printer were that the print failed within the first few layers. Usually by popping off the bed rather than adhering as it should.
- Comment on [deleted] 3 weeks ago:
I’m being trolled and I ain’t even mad.
- Comment on [deleted] 3 weeks ago:
Be serious, please
- Comment on Ender 3 v2 and new to 3D printing 3 weeks ago:
My first printer (that I still have and use) is an Ender 3 Pro. My second is an Ender 3 v2 Neo.
The Ender 3 Pro doesn’t have a Z-probe or autoleveling. Just a Z endstop. When I got that V2 Neo, my whole world changed. I could use the whole bed without adhesion issues now!
So I got the CR-Touch upgrade kit for my Ender 3 Pro, and it now works just as well.
A Z-probe is definitely on my “cannot live without” list of features for any printer I get in the future.
I usually prefer the stock beds, though, and I don’t necessarily know whether warped (like, not just “not flat” but actually not planar) beds are when talking about the glass beds. That said, if you have issues with not being able to use the whole bed without adhesion issues in some parts of the first layer, I’d strongly suggest a CR-Touch.
I had to upgrade the mobo on my Ender 3 Pro for the CR-Touch. Not sure whether you might have to for the V2, though.
- Comment on Mark Zuckerberg freezes AI hiring amid bubble fears 3 weeks ago:
Well that news article surprises me more than Cookie Monster switching to fruits and vegetables.
- Comment on Sterilised Toilet ☢️ 3 weeks ago:
Literal shitposts are the best kind of shitposts.
- Comment on Does eating before bed Cause weird dreams? 4 weeks ago:
Na.
- Comment on Vibe check! 5 weeks ago:
DBDA
