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morbidcactus

@ morbidcactus @lemmy.ca

Posts
8
Comments
481
Joined
3 yr. ago

  • The Prusa Mk4 has done it again ☹️

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  • Grid infill is crossing, get a decent blob or buildup and you could have nozzle collision, I personally like gyroid but it is slower.

    Had a similar failure on the mk3s, what does the belt tension test return? Stealth mode may help or be the cause, anecdotally I've seen mention of motor temps, the old rambo board running stock firmware they got toasty when printing in the enclosure in the summer, stealth helped me limp it along until I did a board swap and changed to klipper. I don't know if this is an issue with the mk4 as that's not using the older Rambo based boards, but something to consider as well, had it happen even after I did the first abs rebuild.

    Edit: too tight can also cause issues, not necessarily skipping but having it trigger the virtual endstop, prusa has an article for troubleshooting layer shifting. Also probably with checking both axis to ensure they're smooth and consistent across travel, seen an over tight x carriage back cause too much resistance and have false triggers.

  • Stepping up from Tinkercad but to what?

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  • I'll third it, I used Solidworks before, freecad was fairly easy to adapt to before the 1.0 release, workflow is even nicer now, trying to convince my dad to move to freecad over paying for a sw subscription now that he's retired.

  • [Live] Canada election 2025: Federal leaders English-language debate - CBC News

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  • Yeah, I've got comments mirroring that, Harper should be to the Tories what Bob Rae is to the ONDP. Probably sticks out to me because I was just old enough to start voting during those years, that wasn't that long ago though, like I know memories are short in politics but I'd not be running with a Harper cabinet minister if I were them.

  • Keychain tool and text

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  • I'm not sure how bambu studio does it (use prusa/superslicer) but chiming in because I was trying to figure this out last year doing a large ish batch of keychains for a friend and was fighting a bit with it, probably is a way of doing it all in freecad but the image was my biggest issue.

    I ended up doing things in blender to subtract the image and the slicer itself, did a text object, positioned it where I wanted, merged the objects and marked the text as a negative volume (think that's the term, might be subtract) so it was subtracted when I sliced it, might help in your case?

  • Poilievre says he'll use notwithstanding clause to ensure multiple-murderers die in prison

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  • I kinda want it to be both hard and costly to invoke, needs to be an absolute last case, like have it trigger an election so that it has to be voted on by the next government, or have it trigger a referendum that requires a super majority of eligible voters to pass (nonvoters count as no), and if it does succeed it terminates when parliament dissolves, that's kinda inline though with the 5 year renewal periods.

  • I too like to live kind-of-sort-of-dangerously

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  • I was wondering if it was some sort of alignment/clamp for something like pipes or rods, or maybe some sort of bushing/bearing holders (think linear rods). Your tuning looks great btw, look pretty nice even in the worst case lighting conditions, adhesion not an issue doing this way? My dad asked me to print some stuff he designed for his beekeeping tools, has a bearing surface that's awkward to print accurately, I'm probably going to revisit that with this as inspiration, other than the helper ears I see on the build plate anything else you did?

    To ask questions, for the application does dimensional accuracy actually matter? AFAIK rebar isn't exactly the tightest wrt tolerances (I know flat products, not long products, but knowing what hotroll coils look like I'm assuming it's similar), could probably have gotten away with a different orientation and could probably have avoided supports (I find arches print nicely). Having said that though, thinking strength might be another reason to print the way you did, face down and you have shear & torsion in between layers, thinking that's still a concern if you printed it standing, but yeah, just thoughts.

    Edit: also spy kapton tape, did you find the bubble insulation made much of a difference? I'm putting what's basically heat barrier fabric on the interior as a first try, I grabbed some rock wool and bubble insulation but it's thick enough that I'm mildly concerned with it interfering with the gantry, having everything off for some refurb and wow I forgot just how close everything is, they really didn't waste space eh?

  • How can I get the clogged filament out of this heatblock and nozzle?

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  • Softening and that, maybe? But it really depends on the filament brand too, as far as I'm aware, acetone doesn't readily dissolve in acetone which is what's meant by not doing much

    Petg is pretty resistant, why PETs used for bottles.

    Personal experience cleaning up clogged nozzles by immersing them, yeah acetone barely touched the petg

  • Netanyahu lashes out at Carney for daring to criticize him

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  • The ADHD Iceberg

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  • I was in the "I masked hard until I lost the structure going into uni" camp, and even then I didn't actually get a diagnosis until 31. It's super familial and looking back, my dad 100% has ADHD and kinda suspect my mom has ADHD too, it's not that they were in denial they just didn't see anything as atypical, no teacher ever flagged me either, again, hindsight, I was overly talkative to the point of distraction and absolutely had emotional disregulation.

    My parents did their best and were supportive of me, it sucks I was late diagnosed but was not due to them at all.

  • Ender 3 V2 damage?

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  • Petg inside the enclosed though can definitely have a short service life, the original x axis idler on my mk3s gave up the ghost after a month or so of pretty consistent printing of abs in the summer, had expected it so i the first thing I did in abs was a set of prusa spares which lasted until I did a bear mod last year.There's obviously variation in filament though so YMMV, petg is still a solid material to use if you don't have an enclosure (though I'm always recommending then if only for gasses and fine particles while printing)

  • I think I figured out how to live with adhd

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  • It's probably no coincidence that a large amount of technical people are some form of neurodiverse, I've run into a lot of others with ADHD working as a SWE, definitely suspected some as well when I worked as a Mech Eng (wasn't diagnosed then), and there's definitely people with autism as well.

    Lots of our processes are flavours of continuous improvement, agile is amazing when it's done correctly, as I get older I've started pushing more for that.

  • They'll cast you back to the Windows realm with all their toxic might

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  • Terminal usage is a tool just like GUI tools, I don't think it's helpful either to preload people with the belief that it's some arcane tool that takes years before you can start using it, like anything you pick it up by doing.

    Can't really say it's 100% optional as a blanket case either, heavily depends on a user, my work I've depended on having a terminal for years, and that was even before I moved into SWE, I've seen lots of business developed processes put together as an amalgam of batch files, VBA/VBS, and python because they needed to put something together with what they had rights to.

    Be honest that I don't see the terminal as a barrier to Linux anyhow, for the use case of "I browse the internet and use office programs", you absolutely do not need to drop to the CLI, at least not for Debian or Mint, can handle installs and updates through their graphical package managers. Most people probably aren't setting up services or the like on their machines, and if they are they already require terminal usage on any operating system.

  • Does Bambu lab transparent petg just suck as a material?

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  • I've found it varies from manufacturer to manufacturer as well as colour, some of the petg I've got has been chilling in my cabinet in the garage for at least 1 summer and it prints fine, just some stringing, other spools they're a mess right out the bag. Still worth drying filament, but more so stuff like nylon which is extremely hygroscopic.

  • Keep Tabs On Your Vehicle’s Needs With LubeLogger

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  • Haven't looked into it but do shops offer lube analysis services? Yeah you could send out your own sample to a lab, having it as a shop service would be way more accessible to people.

    Though, in my experience, getting people to commit can be a pain, lots of "yeah I know we have a long p-f interval and it's super noticeable before it functionally fails, but it's not that much effort so I'm doing needless maintenance anyhow just in case", which end of the day you do you.

  • A good e-mail client for linux?

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  • I've used Thunderbird since forever as my go-to client, I used mutt as well for a while and that met my needs pretty well.

  • DOGE Plans to Rebuild SSA Codebase in Months, Risking Benefits and System Collapse

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  • I've always known your world is complex, working closely with accountants and actuaries the last 4 years doing data applications further confirmed that, there's some legitimately complex math that shows up, and it's a lot of work to model that correctly.

    "It's just a ..." Is a redflag to me, project's going to be a gongshow.

    I find that mentality of not trying to understand the problem and its context totally counter to the engineering method.

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  • Personally, recommend forgejo, gitlab has a lot of features I didn't need and I found the upgrade process if you didn't keep on top of it annoying. Forgejo actions are pretty similar to github ones and setting up runners is super straightforward.

  • How can I get the clogged filament out of this heatblock and nozzle?

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  • Mmmm, yeah that sucks, that first block I mentioned was an older style that wasn't fixed in place and I must have twisted it accidentally after a nozzle change, super slow leak just enveloped the thing, didn't help there either!

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  • i was thinking along those lines for equipment monitoring stuff, klipper works with Prometheus & grafana (have metrics from my printers), was thinking about looking at using the extra accelerometers I have to do something like vibration monitoring.

    I could see using a second sbc for extra sensors as well for support, thinking about printers that don't run klipper, so long as you can correlate data it should still be useful. Honestly kinda thinking something similar to PLC data, was fantastic for fault finding and failure investigations, also useful for process control + condition based maintenance, there's a heck of a lot that could be done with it.

    Edit: You have me thinking about this now, what would be really cool is an ability to anonymously federate data tied to events, I recall some enterprise software I used like 5-6 years ago could do this with condition indicators, I have 2 machines, I won't see every failure mode, but if we had 1000 machines you can get much more accurate information about things like MTBF. Heck I'd even just be happy with some community FMEAs, really just thinking of taking a technical approach to my printer maintenance and usage.