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Cake day: October 29th, 2024

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  • Ok I’ll bite. I’ve gone to public schools in italy and in the USA. Italy was in Roveredo (north Italy) and I went up to 1st grade there. Texas for 2nd-4th, RI for the rest but went to school for primary in a nicer area, high school was basically in the slums. The worse education I received was in italy, up until 1st grade it was glorified daycare. I didn’t know the concept of a spelling test, or how to read more than a few basic words when I got to the usa. Learned a lot in Texas and in ri at more well funded schools, then when I was going to school in South prov where surrounding buildings had bullet holes it was basically a joke. So the USA education system can be fantastic if your in the right district, properly funded. Or it can be junk in a poor underfunded and over populated area. Worst education I received was in Europe though. Ymmv but asking how it is in America is too broad to answer, as I am sure asking how it is in Europe would have a wide range of answers too. I’m sure the education in Sweden is vastly different than in italy. And I don’t know enough to know if the school I attended in Italy was particularly bad, how consistent they are etc. I will say though the USA EDU system is in decline as more schools implement chrome books and online learning the kids test scores are dropping. It was better than it is and our administration has been gutting funding the last few years.



  • Yea it is strange the consistent proliferation of SAE units globally for certain things like tooling and tires. Not sure where else it is common, I only know about where it affects me on a daily basis with what I do for work. The tires are crazy because the aspect ratio is based off the mm width and the wheel size in inches so now units are being mixed! And square drives (like the half inch chuck key u used to tighten the chuck on ur metric lathe) could just as well be say 13mm instead of half inch, or 10mm instead of 3/8ths but the world just refuses to move on in certain areas. This is to say all the more how badly we need to standardize units of measure globally in our intertwined global world. Robbins and Lawrence was one of the first contractors for us gov to make guns that could be easily repaired with replacement parts in the field (before then all guns were hand filed and built so each part was bespoke, and repairs required craftsmen). When an industry starts with a certain standard (tools, tires, machining) that sets and industry standard which takes precedent over all other standards in that field. This is why all these things have stuck with SAE for so long, but these standards were set 100+ years ago. There is no reason not to move on at this point honestly.


  • Well seeing as you worked in an auto shop you know all about the continuous global use of standard measurements! Your tires are always in inches, even when a metric tire (wheel size to be more specific). Every ratchet made is in inches as well as I previously stated. You cant get away from it. I’m not sure why square drives in ratchets haven’t moved to metric considering not many are made in the states anymore, you will use a Taiwanese ratchet to turn a chinese made metric socket using a SAE sqr drive. Wheels I don’t understand the faith to inches either, not like most cars are made in the states. I’m impressed the equipment from the 50s wherever you are doesn’t have inch measurements, as a every machine ive seen of that vintage or older is exclusively in SAE but I suppose my anecdotal evidence is every bit as valuable as yours.

    Your life sounds as though it has been quite interesting, neat variety of work you have performed. If you are curious about machining history, I recommend looking into Robbins and Lawrence machine shop. I live nearby and they are the first place on earth to achieve interchangable manufacture on a practical scale. This is what led to SAE being so common on legacy machines and manufacturing for 100+ years after! It was the birth place of machining as we think of it today, but before cnc (1845).


  • What matters is how many white collar keyboard warriors will sit there and act they know better as if they have a clue about machining or its history lol. I promise you in those 190 countries there are many still using SAE for lots of processes. Guarantee you not a chuck key on the planet isn’t in standard even if the rest of the machine is metric 🤷 do NOT take this as me stating that SAE is somehow better, I’m just stating the fact that machining was born in SAE, and if your lathe is more than 40 years old (the lathe I work with is from the late 1930s) it WILL be in standard. In whatever of the 190 countries you are in what size drive turns your sockets? Oh right, quarter in, 3/8ths, or half in. What unit of measure is the wheel on ur car? Right, inches. Globally some stuff has just stuck with SAE for reasons I cannot explain. You don’t have to like it, it’s simply the facts of the world.








  • Interesting, as somebody who on a somewhat regular basis runs a lathe and occasionally a Bridgeport at work I could not imagine using metric. Mostly because our old machines are all standard, but also because a thousandth of an inch (industry standard unit for measuring clearances) is .0254 mm so now clearances begin to involve more math. Call it lazy but I’m not converting everything on my machines lol. We build engines and some parts and everything we do has to be in SAE.