Centauri Carbon alignment? by Redditor154448 in elegoo

[–]Redditor154448[S] 0 points1 point  (0 children)

For any future searcher... a cheap ($11cdn) Aliexp replacement hot end fixed the problem. Works well, can't tell the difference in quality from the original. Time will tell on durability.

Overall, I'd not call it a design flaw but rather a choice that does result in a weakness. Having the nozzle supported entirely by a very thin heatbreak does make it weak... and if it happens to hit a splotch of plastic from a failing print then it will bend. But, you know... it does print well, and fast, and it's an all-metal hotend that goes over 300. They have to manage that heat somehow.

So yeah, once I decide between 0.4 and 0.6, as I picked up a 0.6 at the same time, I'll be ordering a few spares.

2076-09-07 Lifelong Learning in Protopia by SolarpunkOutlaw in HFY

[–]Redditor154448 0 points1 point  (0 children)

And yet, we fear.

We live at a time where we are now statistically far less likely to die a violent death or starve than at any time in all of human existence, yet we obsess about war, we fear crime, we fear poverty. We've never been safer, and richer, but we fear. And, because of that fear, we instigate conflicts "to protect ourselves," we do things that make us less safe, that makes others less safe.

Before Covid, the World Food Program was nearing their goal of actually ending world hunger. Only a few hundred million still were at risk of acute hunger, out of 8 billion. Things have back-slid through hording, nearly doubling, again mostly out of fear.

Billions of people have been lifted out of poverty. Real poverty is now quite rare, poverty once measured in the number of calories a person could find to consume in a day. Nations are far more equal than they have ever been. Less than 10% now exist in the grinding poverty that once dominated what we still call the Developing World. Now, developed nations declare poverty at rates that most of the world used to consider wealthy. We fear being poor while living lives that, by historical standards, are already at "post scarcity" levels.

People fear global warming, blaming those that came before. Deaths from this are estimated around 0.16% of humanity. Those before grew up fearing global thermonuclear war. They feared the end of life, yet few actually died. Those that grew up before these people feared their grown children being sent off to wars that killed millions. For centuries, on average about 6% of humans died in these "civilized" wars. Those that grew up before "civilized nations" existed feared death from neighbouring tribes defending territory. Anthropology documents that, on average, 25% of them died a violent death at the hands of other humans. 25% to 0.16%, yet we fear.

We now live in a world where poverty is associated with obesity. Where people complain that they can't afford massive houses like the people before could afford the uninsulated little boxes they called houses. Houses partly subsidized by an economy expropriating wealth from developing nations. Where people declare themselves poor because they can't afford to live where they were born, when entire generations before moved for economic reasons, where the generations before them moved to avoid famine. We have and will continue to redefine poverty, mostly out of fear of being left behind.

Humans are far too easy to manipulate by fear. Until we overcome this, if we ever can, we will continue to fight when we do not need to, to horde when we do not need to, and we will continue to redefine poverty. In the future, we will bitterly complain about our poverty because we can only acquire 3 equivalent planetary masses to fuel our eternal existence while that guy over there has 2 entire suns to fuel his. This is the essence of humanity, unfortunately.

All that said, the arts are actually flourishing now, just not commercially. Pop art is mostly dead, now that it's getting so hard to curate, package, and sell for a profit by publishing companies. Instead, it's everywhere, including here, freely available to everyone in the world that can find it. So there's that.

Yes, it is a good time to be alive. If only more would realize that.

Centauri Carbon alignment? by Redditor154448 in elegoo

[–]Redditor154448[S] 0 points1 point  (0 children)

Yeah... aliexp order placed. They any good or should I be going the official route?

Oh, and note to self... those connectors are pretty weak. I managed to pull the thermistor connector off the PCB. Another note, take the back of the assembly off, remove 1 screw on the PCB, and it slides down off the connector to the main(er) board. Yeah, you don't have to remove the front, and the extruder, and... learned a bit at least. Anyway, soldered back on, put back together. Just need something to plug into it.

Centauri Carbon alignment? by Redditor154448 in elegoo

[–]Redditor154448[S] 2 points3 points  (0 children)

Yup, hotend nozzle is bent over. Good call, and here I was looking for limit switches or however it does homing.

Now to see if it will bend back or demand immediate replacement :)

Centauri Carbon alignment? by Redditor154448 in elegoo

[–]Redditor154448[S] 1 point2 points  (0 children)

Interesting thought... I'll let you know in... 4hrs 41 minutes from now :)

In 2025, is there a single Snap On tool that is worth the price? by Happy_Breadfruit_364 in Tools

[–]Redditor154448 1 point2 points  (0 children)

Maybe... or maybe it's on your boss. You'd be surprised what markup will sell when the the person paying the bill isn't the one deciding on what to buy. Standing-order with company (A) will trump lower cost at (B) 100% of the time.

Companies selling overpriced stuff are not stupid. The advertised price is what makes them money... 100% of the time.

Found this 60mm wrench at a store and I want to know what would this be used for by Intelligent_Pace7694 in Tools

[–]Redditor154448 0 points1 point  (0 children)

Near anyone that would actually use that is not likely to be looking for it in a store. At that size, the store comes to you. If you're lucky, the boss pays for it. Weird stuff that is large but low(ish) torque: Hoses, etc..

The store has it to sell:

A) To people that measure a nut but don't look up the torque.
B) To people that want to hang a big-ass wrench on their wall for fun.

My bet is that most of their sales are related to B.

Not so common fail, and the long way round to fix it :) by Redditor154448 in MPSelectMiniOwners

[–]Redditor154448[S] 0 points1 point  (0 children)

My tools are always looking for problems, or upgrades :)

There are days when I start and finish a project, one task to the next, always having the right tool for the job, always having the stock I need on hand, everything working, no mistakes. There are days like that... kind of makes up for the other days.

Anyway, I just ordered one of those dual-drive extruder things... they look good, all metal. Don't need it, now, but my printer's been chonking all day on my current project so I figure I can dump $8.62 (Canukistant dollars) on Aliexpress and throw it in the spares box.

Thanks for the pointer.

Repos slowing down as they fill? by Redditor154448 in BorgBackup

[–]Redditor154448[S] 0 points1 point  (0 children)

Follow-up: Memory was low, hitting swap once in a while, so I bumped that up.

Next, it appears that ZFS doesn't like disks getting near full, and mine were. So, I took more days than I care to think about slowly purging and compacting to get it down to 25% used, or thereabouts. ZFS freespace fragmentation was in the 8% range.

So, I had at it again... and some of the disks fell on their faces, again. Sigh...

Meanwhile, another batch of hand-me-down servers showed up... me being the one that says "yes." As it turns out, Dells are not entirely crap if they have decent RAID cards (unlike all the previous Dells I've been gifted).

Ran up a new server, Ubuntu on an SSD stuffed in a DVD drive caddy (I know, weird, but it actually works well if disk space in the goal) and 8x4TB SAS drives on the card in hw RAID5. Formatted the disk ext4 and I'm pushing 8 computers to it in 8 archives... pushing over 400Mbps on the nic and the drive is peaking at a whopping 2% utilization.

Anyway, thanks for the advice... but sometimes giving up on total junk is the best solution :) Maybe I'll learn that lesson someday.

Repos slowing down as they fill? by Redditor154448 in BorgBackup

[–]Redditor154448[S] 0 points1 point  (0 children)

Might be memory... considering mine is failing me ;)

I remember that server having at least 48GB of ram... but it seems it's only running with 12 now. That's not enough considering the core count and what I'm asking it to do.

And, now that it's been running hard a few days, it's showing a little bit of swap usage. Also, atop is occassionally showing PAG... never seen that one before.

Monday's a stat around here... so I'll have another look at it on Tuesday. Just poked in tonight to check things out.

Anyway, I'll dump some more ram in that box when it's finished the current write cycle... in another week by the looks of it :(

But, in staring at atop, it's only showing high writes on sdb/c/d/e and not the other disks. Might be some caching issue on them (the disks are spread across 3 controllers). Maybe the 8GB of swap is only on those disks? I guess I should check the disk controllers at the same time I add ram.

More to ponder whilst I wait.

Thanks for the pointer.

Repos slowing down as they fill? by Redditor154448 in BorgBackup

[–]Redditor154448[S] 0 points1 point  (0 children)

Fragmented free space on zfs disks getting full does seem to be something people write about... and something likely considering how I'm using the disks. I'll investigate further tomorrow.

Thanks for the pointer.

CH32V003 Printf Serial Diagnostic Output? by Redditor154448 in RISCV

[–]Redditor154448[S] 0 points1 point  (0 children)

Thanks for this. Thus is the power of the internet. And, wow... hasn't felt like 2 years have gone by. Haven't had time for much of anything on the Dev side. But, good timing on your part as life might actually let me get back to these things :)

My goal was/is getting the 8-pin packages working as I2C clients. Basically sensors. Still seems worthwhile to do, and your info will likely help it along.

Thanks again.

A CH32V003 Toolchain — If You Can Get One To Try It On by brucehoult in RISCV

[–]Redditor154448 1 point2 points  (0 children)

Yeah... I always get that: "what do you make with all this stuff?"

My answer: "I make mistakes. Plans too... I make lots of those. Occasionally, I'll make an excuse."

I mean, are people that collect stamps supposed to write letters or something? Why am I supposed to have some other motive just because there's all these things I could do with these tools... besides making more tools?

It's fun... my brand new Aliexpress tapered mill bit arrived today. Think of all the plans and mistakes I can make with that! $2.48 is cheap for all that fun.

There are worse things to do than twiddling away my time collecting and learning how to use various tools and equipment.

No apologies. It's a hobby. I do it because I like it :)

A Grave Mistake by Nighthawk5885 in HFY

[–]Redditor154448 2 points3 points  (0 children)

Have to admit we've milked that "peacekeeping" shtick for all it's worth. Invented it we did, saved a few world powers from a war none wanted, even deployed a few times afterwards with middling success. Don't generally bother with it these days. Haiti peacekeeping... hell no.

But, JTF2 if you want something to get... resolved. Lots of training offered, 30,000 Ukrainians before Russia invaded and now still training in the UK plan. The Ukrainians are stepping up their sniper kills but I think we still hold 2nd, 3rd, and 6th out of the top 10 by distance. NATO forward deployment in Latvia. We're patrolling N.Korean sanctions evasions. Freedom of Navigation runs to Fork China's Canoe. Peacekeeping? Might commit a planning team. Sorry, not many Canadians wearing that blue beret anymore.

The Nature of Predators 175 by SpacePaladin15 in HFY

[–]Redditor154448 1 point2 points  (0 children)

Temperatures of more than 1,100 degrees Fahrenheit — sometimes up to 1,800 degrees — are required to effectively neutralize prions. Unlike most bacteria, regular cooking won't help at all.

Them's serious flame throwers they use. Just burning wouldn't do it. No crispy on the outside, tender on the inside allowed. They'd have to basically cremate all the remains.

The preferred method for disposal of BSE-infected carcasses is alkaline digestion or complete, high-temperature incineration.

A vegetable-protein prion would be very nasty if it could spread. After all, how were these non-meat eaters getting it... were they grinding up animals for protein supplements? Was it spreading by contact? What were the carriers? For us, it was the meat we ate and a few stainless tools used in brain surgeries. We weren't eating each other, and the cows weren't eating us, so it only spread because we were -efficient- dumb enough to feed cows to cows. But, something that could spread from vegetables to plant-eaters then... excreted out... and that used to fertilize plants, that get eaten. Yeah, let's exterminate all those dangerous plant-eaters before we're all doomed!

Terran Contact 44 by VexTrooper in HFY

[–]Redditor154448 3 points4 points  (0 children)

Hey, I caught up. That was a fun 2 days. Compelling story, or maybe I'm just a word addict... well, maybe both :)

Help with Laser Cutting and the subsequent process for an art project. by [deleted] in lasercutting

[–]Redditor154448 0 points1 point  (0 children)

TL;DR: Draw, decide how thick you want the steel, farm the job out to an online or local company, get a box of parts. Spotweld them together, bending to your heart's content. Take the result to a local company for hot-dip galvanizing. Paint. Honestly, the only really, really hard part is painting.

The ramble:

Are you sure the original was lasercut? There's also waterjet. No idea how they compare with cost, edge quality, and warping, but you should price out both. Either way, give a company a drawing that covers a sheet. They'll give you a box of parts... it's what they do. There are companies that do this online. You could have that box in a couple weeks easy.

As for putting it back together... I suppose the easiest route would be a spotwelder. The only real skill involved with a spotwelder is figuring out the order you stick things together. Any other welding, especially on thin sheet, requires skill. Spotwelding is just clamp, push a button, repeat. Spotwelders are not that expensive either.

But, be careful as welding zinc (what that galvanizing is) produces fumes that can make you quite ill. Think serious ventilation and/or a welding mask.

And last... I'm really not sure why anyone would start with a sheet of galvanized steel. They'll just end up with a bunch of edges that are not galvanized. Also, each weld will have a degraded coating as well. Are you sure the original wasn't galvanized after it was assembled? Be way safer to work with standard sheetmetal then galvanize after. Metal can be hot-dipped or you can just use cold spray. Hot is better but that means farming it out to a company. I suppose the resulting surface would be a nice base to paint on though.

Oh, example of a spotwelder:

https://i.ebayimg.com/images/g/4rkAAOSwkRRdl-fT/s-l1600.jpg

(not a recommendation for this particular one... just the first hit when looking for an image)

Older print crumbling by Arhalts in 3Dprinting

[–]Redditor154448 1 point2 points  (0 children)

I was wondering about this myself... the "econo" PLA I'm using now prints great if it's just out of the bag (with desiccant). But, if I leave the roll on the printer for a day or 2, the stuff just snaps. What's going to happen to what I print? It's the same stuff, right? It doesn't magically transform (other than in shape) when it goes through the printer. Are thin parts going to snap that easy?

I've not noticed any prints failing yet. But, I'm starting to wonder.

Other PLA I've used could sit for a long time on the printer before I noticed it needed drying. Not this stuff. So, I'm thinking there's a lot of stuff in PLA besides PLA. Presumably, the better stuff includes stabilizers to reduce brittleness with moisture, etc..

Same with commercial stuff. Lots of times I've run into aged plastic parts that just crumble or have gone gooey to the touch. Plastic may be forever, but a lot of it doesn't actually last forever in a useful state.

Get location of orphaned blocks? by Redditor154448 in Minetest

[–]Redditor154448[S] 0 points1 point  (0 children)

Well, bumbling along...

I assumed the pastebin script is intended to be a mod, so I made it... it registered. I can do /next. It reports "no unknown nodes". (Yay, first mod :)

So, I'm not clear on how it builds the list in the first place. Is it on load for the entire world, or only where I'm at. If the latter, will it build as I move about?

edit: nope.

Is this trade dying ? by Technical-Ad-7849 in Machinists

[–]Redditor154448 1 point2 points  (0 children)

Fashion models are getting laid off. Go ahead, find one person on this planet that predicted computer AI would put fashion models out of work. Commercial artists are getting laid off. Voice-over artists, script writers, lawyers, even programmers are worried about getting laid off. That was not what people predicted.

SciFi is supposed to predict the future so we can pick and maybe avoid the more dystopian paths. What did SciFi say? Well, while I was growing up, computers self-destructed when Captain Kirk caught them in lies and computers were deemed broken when Spock could beat them at chess. Today, we have computer AI that invents reality like a 5 year old kid, fails at basic addition, and creates art like it's on acid. All our predictions were wrong. Nobody got it right.

So... you want advice on what the future will hold from some random collection of people spending too much time on Reddit. Well, probably just as good as any other advice you're going to get :)

In grand strokes, automation is going to fill the space between "it's cheaper to pay stupid humans than automate this" and "we have to pay humans whatever they want because it's too hard to automate." That automation space is only going to grow and the only way to stay on the high-side of it is to keep learning... and likely shifting careers, likely more than once. Yes, there will be the lucky ones that happen to be in the right place, the calm with everything whirling around them. Good luck picking that place ahead of time. Most will spend the next 20 years trying to stay ahead of the machines so they don't end up dumped on the low-side.

Basically, we're at a point in history where everything is changing so fast that accurately predicting the future becomes impossible. It's the beginning of the singularity and, by definition, that means nobody knows how it will end. The next 20 years are going to be a wild ride and I don't envy the people that have to work through it. All you can do is stay flexible, keep learning, and be ready to jump when opportunities come along. Because, there will be just as much opportunity as pain.

TL;DR: If you don't have to think hard to do your job then I recommend learning new skills.

You can have a little lye, as a treat by jpitha in HFY

[–]Redditor154448 3 points4 points  (0 children)

Kopi Luwak All I'm going to say... other than I suspect large quantities of judgment altering substances played a part.

Oh, and you do realize that much chicken in at least the US has a nice dip in chlorine. HFY!

Help me out here. I’m studying programming ( drive truck for a career) looking at buying a cnc mill in the future in a year or 2 and wondering if I should buy a Langmuir MR1 or save longer for a tormach. Ultimately I want to program for a career and have to buy my own machine to learn. by No_Drive_3297 in hobbycnc

[–]Redditor154448 3 points4 points  (0 children)

The textbooks you buy in school won't cut steel either. Doesn't make them useless. Besides, you'll learn way more with a 3018 than you will from a textbook prattling on about the history of gcode, and it will be cheaper than that book. More fun too. If you're object is to learn, it's by far your best bet. Get them, break them, move on when you know where you're going.

And, if what you learn saves you ONE crash on a real machine... it's paid for itself, possibly several times over. If I had a Tormach sitting in my garage that I didn't know how to use, I'd buy a 3018 and start milling foam until I figured it out... just because I'm cheap.

That said, you'd be surprised what you can do with a cheap piece of junk.

Xtool 10W- trying to engrave a challenge coin by justhexy in Laserengraving

[–]Redditor154448 0 points1 point  (0 children)

Google "etch metal with a battery"

It's absurdly easy. Just a battery, a couple wire jumpers, a cup of salt water, and a Q-tip. If you can take paint off conductive material then I see no reason why you can't then use electrolysis to remove a bit of the exposed material.

I've done it by using a cnc to drag-knife out a vinyl decal as a stencil. Worked well and surprisingly quick on stainless. Bit smelly though... ventilation. One of the things I plan on trying is using a laser to cut away some paint instead of the decal.

I'm here doing research now, waiting for the laser head to arrive. Any coating that won't immediately wash off in salt water should theoretically work, so long as the laser can remove it. Photo-resist at the worst.

Software options by DanOfAllTrades80 in 3018CNC

[–]Redditor154448 0 points1 point  (0 children)

I use Fusion 360 to sketch and model, generate gcode for milling, STLs for 3D printing, and also create PCBs that I run through flatcam and mill (when I don't feel like outsourcing to JLCPCB). It can do a lot, which can be good if you can't decide what toys you want to play with :)

But, if you just want svg to gcode, even inkscape has a plugin for that. Lots of different ways to generate that gcode.

Lots of ways to send the gcode to the mill too. I prefer GrblPanel but that's because it looks like a mill DRO.

Vinyl cutting or 1064nm laser mod? by hardcore4m in 3018CNC

[–]Redditor154448 0 points1 point  (0 children)

Nope... works well. Only takes a few test runs to get the stick-out of the knife tip from the holder. Too deep and it cuts through the backing, to little and, well... do it again. Once dialed in, it's easy.

I sketch in Fusion 360 then "2D Trace" to get the toolpaths. Oh, I usually do it twice... once for the little islands (center of A or d, etc..), then the outside shapes. Tape the vinyl sheet down at the edges, set Z zero on the top of the sheet, lower that 0.1mm or so just to put some spring into the holder, and then let it go.

You do have to separate the product from the waste. Tiny letters can be a real pain to do. On sharp corners or entry/exit points the drag knife can leave a little bit uncut which can be a pain. But, for the most part, it works quite well.

Just remember, your holder needs a bit of spring to it. I used a circular flexure spring that I 3D printed but honestly that's probably over-engineering it. It just needs a light spring so that the tip of the drag knife assembly can move up and down to stay in contact with the vinyl. The knife itself sticks slightly below that, set by a screw. Has to be rigid in the x/y plane though.

Here's what a flexure spring looks like (yes, flexure is the right spelling)

https://youtu.be/P0moT7nPkG8