j4k3
@j4k3@lemmy.world
- Comment on Caption this. 1 day ago:
Faces represent approximately 3 billion images of males with mobile devices when accidentally triggering the front facing camera and ejaculatory enterprises. All willing participants opted in on page 189 paragraph 6 footnotes F-K’s external reference G in part 89 of the principal work on “You Never Read the TOS” in the library of Congress.
- Comment on Bat Butts 1 day ago:
What a batass
- Comment on What is special about a power supply designed for basic EDM? 1 day ago:
I’ve seen a project that used a 72v meanwell that wasn’t but like 6-8 amps and an Arduino class controller with an old Cartesian gantry 3d printer. IIRC that was posted on hackaday within the last year but I don’t recall if it was fully documented.
There used to be a guy online selling old public domain and self published machine shop books like the old DIY gingery lathe shaper and mill plans and books. IIRC that had some kind of weird analog EDM plans that used a bucket of water and electrodes to create a large resistor or something odd like that.
From what I have seen in the past, EDM is not actually like HV plasma or high current like welding. The electrode is super close but not touching and the process is fairly slow. It is more like an HHO generator setup but an order of magnitude more focused on a point source. I know a coin can be used as an example. If the coin the the electrode, the face can be machined into something like the stamping die for a minting run.
I think it would be a cool process to integrate into 3d printed jigs and automation. Plus I like winding transformers and building power supplies out of junk.
- Submitted 2 days ago to askelectronics@discuss.tchncs.de | 5 comments
- Comment on Checkmate. 2 days ago:
Made in China?
- Comment on Epstein's little black book found 3 days ago:
That was definitely a pseudonym
Random unrelated picture: Image
- Comment on Schools are using AI to spy on students and some are getting arrested for misinterpreted jokes and private conversations 3 days ago:
It is not the tool, but is the lazy stupid person that created the implementation. The same stupidity is true of people that run word filtering in conventional code. AI is just an extra set of eyes. It is not absolute. Giving it any kind of unchecked authority is insane. The administrators that implemented this should be what everyone is upset at.
The insane rhetoric around AI is a political and commercial campaign effort by Altmann and proprietary AI looking to become a monopoly. It is a Kremlin scope misinformation campaign that has been extremely successful at roping in the dopes. Don’t be a dope.
This situation with AI tools is exactly 100% the same as every past scapegoated tool. I can create undetectable deepfakes in gimp or Photoshop. If I to so with the intent to harm or out of grossly irresponsible stupidity, that is my fault and not the tool. Accessibility of the tool is irrelevant. Those that are dumb enough to blame the tool are the convenient idiot pawns of the worst of humans alive right now. Blame the idiots using the tools that have no morals or ethics in leadership positions while not listening to these same types of people’s spurious dichotomy to create monopoly. They prey on conservative ignorance rooted in tribalism and dogma which naturally rejects all unfamiliar new things in life. This is evolutionary behavior and a required mechanism for survival in the natural world. Some will always scatter around the spectrum of possibilities but the center majority is stupid and easily influenced in ways that enable tyrannical hegemony.
AI is not some panacea. It is a new useful tool. Absent minded stupidity is leading to they same kind of dystopian indifference that lead to the ““free internet”” which has destroyed democracy and is the direct cause of most political and social issues I’m the present world when it normalized digital slavery through ownership over a part of your person for sale, exploitation, and manipulation without your knowledge or consent. I only say this because I care about you digital neighbor. I know it is useless to argue against dogma but this is the fulcrum of a dark dystopian future populist dogma is welcoming with open arms of ignorance just like those that said the digital world was a meaningless novelty 30 years ago.
- Comment on WEEP MORTALS! I AM YOUR VENGEFUL GOD 3 days ago:
Berts aren’t real. They are a hoax created by the government to spy on us like drones
- Comment on YSK that Gerrymandering allows politicians to choose their own voters. In many countries, it's illegal. Gerrymandering is common in the United States 1 week ago:
The objection is that lines are not legitimate. Lines and districts do not represent voters, they represent politicians and that is not democratic.
- Comment on Why doesn't the US name this state? Are they stupid? 1 week ago:
Septic 47 swamp drained here
- Comment on In the olden days, when people got married a lot younger, there were probably lots of grandparents in their thirties 1 week ago:
When I was a kid I had great great grandparents I visited. There were old people that talked about up to 4 generations of great, so great great great great grandparents were still alive. Yes, I’m originally from Alabama.
- Comment on How to design a print with better tolerances – Slant 3D (12:34) 1 week ago:
YouTube has video nerds. There are very few advanced Makers on YT. People like Ben from Applied Science are on the short list. I tried making content for YT a few times but that is like a full time job. YT stopped promoting real low level Makers and community stuff around 2017. Prior to that I had something like 1k5 people I followed on there. When they got integrated into ISP with local caching they had to limit what people watched by promoting a much smaller slice. The result is that now advanced content is not promoted well. YT only wants people that can churn regular garbage like cable TV all over again. So he probably didn’t even know. Still his niche is in transferrable design for a farm and that can be interesting.
- Comment on How to design a print with better tolerances – Slant 3D (12:34) 1 week ago:
If I was doing this design, I would build the fins from lower and taper pocket the bottom edge with a 45° pocket that enables them to print unsupported. It is possible to just leave a gap, or make a single wall riser near the tip to anchor the bridge but this will need printer and materials tuning with inconsistent results in my opinion. I think he was mostly showing off the abstract application of an unexpected idea people are likely to watch.
Ironing is as much about hardness as it is about smoothness. The extended heating will make the lower surface harder and might be workable on your home machine. Your flow rate in slicer settings will be critical for ironing because any bulldozing of material left behind will wreck you. Plus all that extra heat in a solid stack of layers is going to strongly promote warping.
If you’re really tight on clearance for something like this, I have used typical glue stick. You just add a print pause and either some tape or very carefully apply glue stick just to the overhang clearance with a 2 print layer height gap. The glue may take a day of soaking in water or alcohol to completely soften and dissolve, but that is basically poor-person dissolvable print supports. That trick is really only worth doing for stuff like mechanical prints you want to embed in an assembly with tight clearance. It is a pain in the ass and certainly not a transferable design for a farm or file sharing.
- Comment on How to design a print with better tolerances – Slant 3D (12:34) 1 week ago:
Just do small test prints first. For a table saw feather board in PLA this worked but it is length and material dependant.
Calipers are consistent for the 2.6mm but too dead of a battery to charge the capacitive sensor past around 50mm so the scale shows ~63mm long. I think the optimum angle is around 30° but don’t quote me. I just imported an image of another feather board and used it to get basic working dimensions. You only need to know 1 measurement in a flat image in CAD to calibrate the size for use in the background to draw your sketches on top of. With a table saw feather board, you know the slot dimensions. You could easily screenshot the video’s sketch of the feather pattern here, import that and make a copy at any scale in FreeCAD. Mango Jelly has YT vids about this if you need them.
- Comment on How to design a print with better tolerances – Slant 3D (12:34) 1 week ago:
It is an interesting approach to use feather fingers to hold a lid. That one has never occurred to me in design, but I loath thick useless walls like this.
He kinda touches on the way sharp corners are an issue because of the overlap in the extrusion diameter at the direction change. The overlap in circles is ignored in the slicer so there is always some amount of over extrusion in corners without a built in radius matched to the tessellation resolution and step accuracy of the machine.
Personally, I prefer to make a slightly larger clearance for such an interface. Then I use a small round dimple between the parts in the center of the long wall. Any long wall will have some flexible compliance at the center. I use a small 2-4mm diameter dimple that is padded/pocketed 0.5-1.0mm with a similar tolerance to the part. The subtlety of this feature is far less likely to disturb the outer part perimeter wall smoothness. The trick is to design the positive dimple pad with a closer tolerance to one side so that contact pressure is held to prevent looseness.
- Submitted 1 week ago to 3dprinting@lemmy.world | 9 comments
- Comment on They moved to Russia seeking a better life, but things backfired badly 1 week ago:
You can’t fix stupid. One must flee to intellectuals to escape racism. The closer one gets to agrarian culture the more backwards the average group will be. Russia is a backwards backwater wilderness with a tiny sliver of civility within the fringe of northeastern Europe. All of Russia has a GDP the size of Texas, and Texas is nothing compared to California or New York. One moves to Russia because of stupidity or desperation.
- Comment on Is this the end of Bootloader Unlocking in the EU? 1 week ago:
Fuck smart phones and neo feudalism. This is theft of ownership with a criminal complicit government. I applaud all Luigi’s these people deserve it. These are the killers of democracy. If your device only runs factory filtered stalkerware garbage, all democracy is dead. All information is easily filtered by this proprietary shit. Freedom of the press is a bullshit tiny niche of the broader requirement for a fully informed public. The fucking “press” is bullshit to highlight. You must have fully informed citizens and you may not choose how that information is shared or disseminated between citizens. This is not democracy. People are so fucking stupid.
- Comment on Microsoft suddenly bans LibreOffice developer's email account, blocks appeal 1 week ago:
Microsoft + GitHub = if you’re using it still W T F are you thinking!!!
- Comment on "Mexico" sounds like the name of a business 1 week ago:
★★★★☆ Better than US Robots Inc. or Cyberdyne
- Comment on What are your go-to sites to find free 3D files to print? 2 weeks ago:
Their website has been janky. They have done stuff that is likely related to poor configurations of the server but appears to be exploitive. Their site hasn't had very good features for search either. Their search results are generally garbage in an authoritarian like attempt to salt your query with unrelated irrelevant garbage to milk ads. When they are unable to serve ads, they have tried to block access in the past. They seem under funded and likely have a mess of unmaintainable spaghetti code because when they make changes other stuff seems to break often. Downloading files from such a place is likely to be a major security risk.
Additionally, all of these file sharing websites are kinda a beginner’s thing. They are only really useful for trinket type sculpted objects. When it comes to functional prints, there is a lot of subtle details required for proper design. You will quickly learn that fasteners, and print tolerances required to replace metal fasteners is very print, material, and printer specific. I know my exact tolerances in every orientation on my Prusa. When I design, these elements are built into that design. I do not care about calibration. Anyone that obsesses with calibration is doing so in order to transfer designs between machines. If you make your own designs you just need to dial in the tolerance locally. If you really need a 9.95mm part dimension with a 10mm slot in some object, it is extremely easy to do in CAD. Just print a unit test of a slice of the object in question in the same orientation and manually measure all relevant dimensions and tolerances. Let’s say you measure 9.98mm when you dialed it to 9.95mm. Which side needs to be adjusted might be a factor too. All you need to do is go into the CAD and change the dimensions to 9.92mm with the change oriented correctly. By design these are ultimately precision machines without accuracy. The 0,0 home location is always different, but all motion is relative to this location. Calibration is trying to create transferable accuracy in a precision system. The deeper you get into this, the more it becomes an issue. Tesselated object files are also an extremely poor way of transferring designs because it bakes in the precision versus accuracy bias. If you are unaware, the issue with files needing tessellation is because of π being infinite and all computers truncating infinite floating point values. A slightly better solution for small file sharing is to post STEP files. These are the real dimensions with π as generated by the CAD hierarchical tree, but without the full tree. The STEP file can be imported in CAD and further refined through new operations and importing edges from the STEP file. However, if you go down this path, you will likely find that only beginners and extreme amateurs seem to share their designs even at this level of sharing STEP files or even the large CAD files too. One of the most critical advanced CAD skills is knowing where to place an object’s origin and how to dimension everything relative to critical dimensions. This gets into the topological naming issue of how CAD works under the surface. Basically there are a ton of ways to do CAD wrong. There are many CAD operations that exist for very specific niche case reasons, but are never supposed to be used within the main hierarchical tree. If this is done wrong, it will create multiple stacked references to truncated π and this will break the CAD part every time, especially when making any further modification. I often have this happen at a couple of stages within my own very complicated designs. This is very typical in a CAD design workflow. The solution is to stop and rebuild the entire part from scratch while building the proper order of operations or a better origin for the part. I usually rebuild a part at least once or twice before printing complex stuff and assemblies. In the past I tried printing stuff from places like thingiverse, but it was fiddly and nothing worked very well. I started importing them into FreeCAD and just rebuilding them with the part as a reference, but even this sucked. My only use for these websites now is for ideas I might integrate into my own designs. I can make anything in CAD properly and faster than I can print the whole thing twice. That is the full learning curve of 3d printer file sharing. It is also why selling files is not really a major business thing that takes off. That would only be possible with accurate machines. Precision is cheap, accuracy is not.
- Comment on NO! I don't want to download your app and set up an account. Leave me alone 2 weeks ago:
deprecated operating system problems
- Comment on No LUFS regulations are the reason you use subtitles to watch TV – Tom Scott YT (7:58) 2 weeks ago:
Me too. Atomic Frontier is following a similar ultra dense respect-your-time videography-nerd polymath approach to YT.
- Comment on No LUFS regulations are the reason you use subtitles to watch TV – Tom Scott YT (7:58) 2 weeks ago:
I did not mean to prejudice. Sorry.
- Submitted 2 weeks ago to youshouldknow@lemmy.world | 36 comments
- Comment on You deserve better, honey bun. 2 weeks ago:
sorry bout your nipples
- Comment on Americans have been trained to hate foreigners by Fox News, owned by a foreigner. 2 weeks ago:
Stupid people are universal though. Every country has them. In the US they have been weaponized. Many of us are very much opposed to the stupidity.
- Comment on What are you wearing right now ? 2 weeks ago:
Comforter
- Comment on My rant about owning a reddit alternative and senile users 3 weeks ago:
You are too emotionally involved in this to be objective in my opinion. You need someone that is very liberally aligned to asses the situation and take action accordingly. This is what I tell fellow mods. If a mod is participating in a thread, they are no longer a mod and should not take actions against others. Ask another mod to take a look and take actions.
Everyone has a right to have a bad day, and a right to be wrong. No one has a right to continuously bring others down. I would send the guy messages addressing this and see how he responds regardless of my biases and preconceptions. I would then notify him of my expectations for constraint. If he violates that, I would warn him, likely twice. If it happens thrice in a span of half a year, I would not hesitate to ban him. My policy is “first do no harm” and “live and let live,” but these apply to individual and group at the same time. Never be an authoritarian. All admin and mod actions cause harm that should be tempered with kindness empathy and reason wherever possible. Social interaction is an addition. Causing sudden withdraw in an individual may cause real and irreversible harm.
- Comment on Republican calls out Trump on GPU sales to China 3 weeks ago:
Bet, sure. Without open skepticism for both the worst of criminals get away with it. Pointing at the potential for corrupt gain is quite apropos for 47.
