#engineering & manufacturing

[andmaybegayer]

Rambling: So much of this is just like. It's all the money, you can't get around the money. Engineering is primarily a cost optimisation problem, so is business, where do you buy your parts, how much do you pay your labour. The companies can make equal quality goods cheaper in China because of the industrial base. Western workers don't want to work in manufacturing because it doesn't pay as much or as reliably as other jobs.

I like reading articles and watching videos about factories and a thing you find with a lot of American factories is they're often highly specific niche industries where they don't have much competition or they're really low volume where less intensive manufacturing processes still work or they have big military contracts that give them their base income. Really it's wild how every little engineering shop in the US requires base level security clearance because they make the cable harness for the Hornet or whatever. And crucially, crucially: they employ 100 people. Planning to work for one of these companies is like planning to be a pro baseball player but you make $35/hr.

I studied in South Africa, and I studied electrical engineering, but like. That was my fifth or sixth choice from a personal interest perspective? As a teenager I was really into biochem. I really wanted to work on like. Bioreactor stuff. South Africa has okay industrial chemistry but not that much biochem. So why would I go spend five years getting a biochem Masters and hope I could find a job at one of like six companies. It's a bad move! Once again, baseball player odds! Mostly if you're lucky you'll get to fuck around in a half-related field for a few years and then you'll wind up with some office job that you found because it turns out running tests on paint shearing isn't personally fulfilling enough to make you stay in a lab job.

Hell, even taking the Good Hiring Engineering Job market, it's a goddamn pain in the ass to find any actual engineering work. I applied to dozens of internship positions every semester at engineering firms and workshops and never so much as heard back, whereas I could go to the software job fairs and get two offers and several interviews for a vacation job in a couple weeks. You can swim upstream to get in there but even if you're willing to take the pay cut, engineering jobs are slow moving and slow hiring, and in small departments your professional progression is often gated behind someone retiring or dying.

A while ago someone (was this Reggie? sounds like him EDIT: YEP) was talking about how part of the reason why no one in the US for the past 20 years can do like, epitaxial growth optimisation isn't because there's some philosophical or educational divison, but because anyone committed and driven enough to spend months optimizing that would just put that energy and commitment into going into software or becoming a quant or some other higher yield option. Meanwhile if you're a driven and focussed ladder climber in China there's dozens of factories looking for someone to do exactly this. The people in the West who are so into this that they still do it are often in academia, not industry, and that's an even more competitive and impenetrable sector to get into. Getting a PhD grad job in academic chip manufacturing is miserable, it's basically a six year long interview process that costs you hundreds of thousands of dollars that has a 0.1% chance of panning out.

Actually, I did once do a factory internship, it was my only nepotism internship, at a construction materials factory where my dad was a manager, and it was really interesting work! I had a lot of freedom in a small engineering team and I spent a while understanding a bag filling machine and reading manuals and tuning the control process and talking to floor workers and designing sheet metal parts to improve their jobs. And when I talked to the engineer supervising me I found out he was on a six month contract that wasn't getting renewed and he would be leaving the company basically the same time my internship ended. That company hadn't hired a full-time process engineer in ages, and probably never would if they could avoid it. Not encouraging!

People often say you should get into the trades because they pay well and are material fulfilling work. This is like. It's an elision. Successful tradespeople are in very high demand, but becoming a successful tradesperson is very, very finicky. I worked with a lot of electricians and millwrights and technicians, and for every tech who was successful and running a roaring business there were five guys stuck in eternal apprenticeships or struggling to make a name for themselves in the industry on their own. Some trades are great for this, other trades are 90% training scams where you spend nine months and five thousand dollars on a course that gives you a certificate almost no one cares about.

Every now and then I talk to an installation tech I used to work with who has a bunch of CCTV and security certs he got in the DRC, and he is just absolutely struggling to get by. There's already enough successful companies to serve the demand, why would you take a risk on this fly-by-night? He could find a technical job, and he does, but it's a dead end, everyone wants a base technician forever, they don't want you to upskill and move on. They hire in an external electrician to come in for an hour sign off on your work, and that's all you need.

You can't develop an industrial base unless it's appealing to work in the industrial base. If you're an industrialising nation, the appeal is "It's not farm work and you might get some real money instead of a sack of barley" but in a modern society you need to pay at least as well as the office jobs. If your industrial sector is small it can afford to only hire the most qualified people because it's a labour buyer's market, and that's how you produce a massive knowledge gap.

[supplyside]

ship engine factory

[awkwardrocker]

I need everyone upset about Liam's promotion to understand that it had nothing to do with him being better/worse than Yuki. Yuki outperformed him. Yuki deserved the chance. BUT Yuki is not a Redbull driver. He is a Honda driver. He has no loyalty to Redbull and that is why he did not get a chance next to Max. It's not that he didn't deserve it. It's pure business.

Redbull are ending their relationship with Honda. They are creating their own engines. It's likely seen as a big liability to Redbull to have Yuki actively involved in any tests or even near anything involving the 2026 engine.

This is not an attack on Yuki or his character or anything like that, so please do not take it that way. But, Yuki's loyalty to a different engine manufacturer is a major risk to any new manufacturer like the Ford/Redbull powertrain. You just never know. I'm not saying he doesn't deserve a good drive, but Yuki's loyalty will forever be to Honda (as it should) and that poses a lot of risks for Redbull.

Once again, I am not commenting on Yuki's character or making assumptions about him when I say this, but there are a lot of big concerns if he gets promoted. He could ditch them for Aston immediately because Honda asks, he could share information about the new engine to Honda, or he could give questionable feedback that negatively impacts the new powertrain. Maybe he wouldn't do these things. But if there's even the most miniscule potential that he could, it would make any team hesitant. F1 is rampant with cheating allegations and questionable tactics to win. The teams will want to protect themselves in any eventuality. And that is what's working against Yuki so greatly.

Yuki has proven to be a very competent driver over the past year, but let's not forget that he nearly lost his seat in 2023 and the rumored reason he stayed is due to Honda. He owes his career to Honda, not Redbull. And at the end of the day, that's his main flaw within this team. It's not his driving. It's not his temper. It's not anything else. It's purely who he is aligned to poltically in the racing world. Is that fair? No. Is that how racing works? Unfortunately, yes.

[bonebrokebuddy]

@kodedgeekthings eyo you mentioned wanting a dpxdc prompt for Howard, Batman’s mechanic!

Harold misses fixing toys for kids and in his off hours has taken up the habit of answering questions on forums about machining, electrical, engineering, mechanics, and mechanical design that are often frequented by students.

One day, he comes across a request by a college student who is trying to assemble his own car out of scrap he bought from a local wrecking yard.

Ghostly_Boy states that he has previous experience in machining and can make replacements for broken or too-damaged parts if need be, but he doesn’t know where to start and what specific requirements he needs to reach to ensure it’s street legal.

Harold willing to help, he answers a few of Ghostly Boy’s clarifying questions:

- Great questions!

It’s good to note that if you’re not careful, fixing or making your own car from parts can be a moneysink and can cost you more than a brand new vehicle. - That being said, your first major step to ensuring you can drive the car is to get the title of the body/frame of the car you plan to build. It’ll have the VIN on a plate welded to the frame usually near the lower edge of the windshield wipers on the drivers side. It’s how the DMV identifies vehicles for licensing.

- Generally, you’ll at first get a “wreck out” title that shows the vehicle is listed as a total loss, but if you can assemble the parts for the car with that frame, the DMV can check if it’s properly running and road worthy & license for you to use it on public roads if you’ve done the proper paperwork.

- Once that is done, it’s largely a case of getting the right parts and assembling them. Depending on how much you have to repair, you could be taking on a task that could give a challenge to even a seasoned mechanic. There may be additional paperwork depending on what exactly you need to repair, like the breaks, lights, steering, etc.

- If you want to build the car entirely from scratch, chassis and all, that’s an entirely different story with a much more complicated list of requirements to make it street legal, so getting a frame from a junkyard is a great first step!

- Make sure to keep all bills of sale, junkyard receipts, invoices and manufacturers’ certificates on any major parts you used in building the vehicle to prove its road worthy to the DMV when it’s complete!

Harold doesn’t always answer first but over time he’s found the adventures of this kid amusing and keeps up with it.

Ghostly_Boy keeps the forum updated with his progress:

The kid spontaneously deciding to scrap the wiring system and make his own in a span of 3 days, leaving experienced mechanics on the forum practically screaming at the kid for his updates showing him using random wires he salvaged and pigtailing them together to get the length of wire he needed.

Mixing not only multiple types of wires but ones that didn’t have the protection needed for auto use. DIY-ing his own relay and fuses he didn’t have and connecting the wrong grounds and switches. And planning on leaving the wires unwrapped and loose.

Leaving Ghost to promptly redo the wiring, correctly this time, within 78 hours.

Making a repair of a massive rusted hole on the passenger side by the bumper and the front tire via cutting 1/2in past the rust, grinding it pretty and clean, tac & seam welding the vintage aluminum housing material of a toaster to cover the hole to the response of Harold and many others in the forum just going “… I guess that would work?”

Harold and many others telling the kid that this “ectoplasm” material wasn’t cleared through the EPA’s Clear Air Act and could be illegal to drive with it as it’s fuel source unless he got the emissions tested & the center of gravity of the car adjusted to have the center of gravity a gas car has, it wouldn’t pass Federal Motor Vehicle Safety Standards. Nor would the previously untested on material make it easy or quick to get an Emissions testing certificate. Best to just stick with gas.

Removing what he thought was a “skid plate” that turned out to be another rusted out section on the frame on the bottom of his car and repairing it with steel he salvaged from an old medical table he had laying around. (To the multiple slightly confused commenters asking how Ghost had a spare medical table, he replied, “eh, my folks visit every so often and they’ve been giving me things they’re clearing out of the house so they can move closer to my older sister. I just so happened to get the ye olde medical table. They’re an odd couple of folks but that’s why I love them.”)

People just crying at the kid to go to rockauto.com and just buy the damn parts he needs for his car. (A good resource btw)

The kid kept cutting corners to save cash but through the badgering of Harold and many others that he actually would have to spend money to make this car be safe to drive in, he finally got it completed.

Ghost’s post of him leaving DMV waving the updated title to the car in its envelope in the air, titled, “THE DMV FINALLY SAID IT WASN’T A FIRE HAZARD! ONLY TOOK 2 YEARS! THANKS EVERYONE!” Got the most amount of responses he’d ever had with congratulations from lurkers and previous commenters.

Over the course of those two years, Danny learned how to draw his own wiring diagrams, properly solder and weld, and learning to actually plan out his projects so he got it right at least the fifth time instead of the 20th. Not bad for a kid that went straight from graduating high school with a 1.5GPA to construction jobs.

But after finally getting the car approved, Ghostly_Boy returns to the forum with a new problem. Lamenting that his parents keep coming over and “modifying” his car to no longer make it street legal.

At this point, about half of the answers to the submission think it’s either a joke project taken very, very seriously with a good chunk of money behind it, or a kid with parents that have narrowly avoided falling completely down the mad scientist rogue rabbit hole.

After all, what sort of parent would think that the DMV would approve to “anti-ghost missiles” being attached to the outer body of the car? Either way, the submissions always had video attached showing a demonstration, proving that Ghost wasn’t just completely yanking their chain. And a good amount of money would have to be sunken in to not only pay for the fines Ghostly continued to get from the additions to his car, but to actually manufacture and make a unique working product for each plea for help request.

Harold is not only taking notes on some of these defense measures but also decides to bring up the boy to Alfred. Intrigued, they together keep an eye on Ghostly_Boy. Bruce may be their employer, but they can handle a case or two on their own.

- I wanted Danny to try to make smth for himself now that he doesn’t have access to his parent’s lab anymore but he also doesn’t have access to ectoplasm so he’s fairly unfamiliar how to wire things Not for ectoplasmic standards.

Also I wanted to make a prompt where Danny had a good relationship with his parents & went into a fairly realistic job after high school with his fairly bad GPA so he’s saving up for a technical school via construction jobs as he doesn’t like the idea of working fast food for understandable reasons.

[mildarka]

Went to a museum today and bought painting supplies a couple of days ago :>

super excited to get back into painting again! It's been... years??? whoops???

I bought gouache tho! I've never used it before! I'll probs default back to acrylics but I'm excited to try them out :D

[noosphe-re]

S.M. Kamali, E. Arbabi, H. Kwon, & A. Faraon, Metasurface-generated complex 3-dimensional optical fields for interference lithography, Proc. Natl. Acad. Sci. U.S.A. 116 (43) 21379-21384, https://doi.org/10.1073/pnas.1908382116 (2019).

[zytes]

ozone

[adafruit]

Desk of Ladyada - Tariff Talk! ASK AWAY! 📦🌎💸

We're doing the show tonight or Tues, so much is going on. Lots more questions came in too! Post yours before we go live…

This week was not a big week for engineering because we're neck-deep in tariff management! We had a video on Wednesday about the first round of tariffs announced—they have since been ratcheted up to 20% + 125% = 145% minimum on products from China and Hong Kong. "Retaliatory" tariffs on products from other countries have been paused, but there's still a 10% global tariff.

Then on Friday, it looks like some HTS codes

were "exempted" temporarily

Let's take a look at the CBP (link) and the exempt tariff codes

and see how they might apply to the kinds of stuff we use to do our electronics engineering.

The Great Search - How to Source Tariffed & Non-Tariffed Items on DigiKey

https://www.digikey.com/short/2nb7nzb3

Since this is the topic of the day, we'll be looking at how to purchase an item from DigiKey with tariffs in mind. DigiKey is a free trade zone, which means that if you're not in the USA, you will not have to pay additional tariffs on goods that are re-exported. However, for USA destinations, the new tariffs can add a significant cost if the component has its last manufacturing step in China.

Let's use the example of a simple I2C-controlled temperature sensor to see how our sourcing decisions may be impacted by tariffs.

[moonshynecybin]

Tbf Marc has, at least, mentioned once that he doesn't feel the front, so it truly is on Ducati's hands there. I think with all the talk about Marc destroying Honda, they should at least know better. And I don't know, if I were Gigi and my beautiful princess didn't like something about the bike | :( I would try to make it better. It's only been 6 races and let's remember that Ducati doesn't have concessions so their work might be slower (in terms of like, Pecco and Marc trying things)

oh yeah no i think the issue is that ducati has brought a more difficult (and maybe, as a result of that lack of feeling, slower for non-marcs) bike this year and according to crash pod this week it looks like it might be an issue with the engine, which is more of a hybrid between the 24/25 concept than initially reported, and that they’ve homologated until 2027 so. like there’s a reason pecco is saying this problem isn’t going away lol they’re stuck with it for the long haul

[catenary-chad]

I’ve seen an uptick in people saying they don’t know much about trains, as an fyi I’m open to giving technical/historical advice for OCs or specific concepts or ships. Outside of steam engines (they usually get worse with irl context tbh), odds are I will enable you with some weird real justification for a “silly” concept or “anachronistically old” character still being around. Real trains are wildly counterintuitive vs media portrayals and often way weirder than given credit for.

I’m broadly familiar with 20th-21st century US trains and have some knowledge of British ones. It gets a lot spottier outside that but I know where to look and can probably point you in the right direction or dig for something if you give me a few days.

[frankreynoldswhitetailtwinkusa]

FRANK REYNOLDS, CHAOS ENGINE DISTRIBUTOR

[wikipediapictures]

Vehicle Assembly Building

“Complex 39 reflection shot of the Vehicle Assembly Building (VAB) under construction with the Launch Control Center (LCC) and Service Towers as seen from across the Turning Basin.” - via Wikimedia Commons

[blatentmisinformation]

Before the steering wheel was standardised many unique steering mechanisms were experimented with in early automobiles. Including joysticks, a series of buttons and the ill fated cube

[skjam]

Comic Book Review: The Best of DC #2: Batman

Comic Book Review: The Best of DC #2: Batman edited by Paul Levitz 1979 was the fortieth anniversary of the first published Batman story. Thus this special digest, showcasing interesting stories from each decade of the hero’s publication history. It comes with an essay by Mike W. Barr explaining each story’s significance. Cover by Wally Fax “The People vs. The Batman” credited to Bob Kane…