• Liz
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    11 days ago

    1/16 of an inch is slightly smaller than a millimeter, you’d just end up using a millimeter or half again as your tolerance limit.

    The big issue with imperial is all the fractions and strange conversions. On more then one occasion I’ve caught myself mixing up eighths and quarters, because my brain views them more as concepts then as numbers. Which is bigger, 11/16 or 3/4? Now, you’ll get the answer, sure, but you had to think about it and it goes against the natural intuition that larger numbers are bigger. Compare that with, which is bigger 0.6875 or 0.75 and it should be trivial to see which is easier to learn and use.

    • lightnsfw@reddthat.com
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      11 days ago

      0.6875 is basically a meaningless concept to me when I try to picture it in my head and what if you need to add it to another dimension? It’s not easy to work 4 decimal places in your head. .75 only works because I automatically convert it to 3/4. Maybe it’s just something that comes with experience but I don’t have trouble with knowing what’s what. If your not sure you can always make the denominator equal and figure it that way. 3/4=12/16 for instance. Easy math to do in your head.

      • Liz
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        11 days ago

        Sure, but your measuring system dictates what lengths you actually design things to be. You would never actually use 0.6875, but if some jerk designed something with that length, it will be easy to tell exactly how big it was. If you switched to metric, your smallest practical unit for woodworking would almost certainly be a millimeter.

        • lightnsfw@reddthat.com
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          11 days ago

          The problem is everything is already built using the imperial measurements. Even if we switched all the new tools and materials over to metric we’d be stuck having to do a bunch of conversions when we’re integrating it into existing construction and we’d probably be dealing with that for the rest of our lives.

          • Liz
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            11 days ago

            You’re already dealing with it there’s loads of stuff that’s built in metric, especially everything that’s imported. The question is if you want to continue using a system that invites mistakes in order to avoid the pain of switching. The pain will subside pretty quickly, and only come up every time you have to retrofit old construction and whatnot. As the years go on more and more things will be switched until it’s rare to see imperial. I lived in a house built in the 1800s, but we still had modern windows and insulation because those things are obviously better and we improved the building when it was convenient and necessary to do so.

            • lightnsfw@reddthat.com
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              11 days ago

              What about imperial invites mistakes and what makes you think that there will be fewer mistakes after we switch to metric and now have to use both systems and do messy conversions anytime we are working with pre-existing structures? Retrofitting old construction is basically a constant state of being for me and many others. What do we gain by switching to metric?

              • Liz
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                10 days ago

                I once read a proper academic article explaining how Australia saved about 10% on average across their entire economy, largely from fewer mistakes having to be fixed and not having to maintain two sets of tools. However, I can’t find it now. This random website will have to do. But essentially, pretty much everyone who switches assumes there’s going to be this big cost and hassle and then it turns out they end up saving money and they just kind of quietly forget they ever thought it was going to be a big hassel.

                • lightnsfw@reddthat.com
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                  10 days ago

                  I already don’t have to maintain two sets of tools. I would only have to do that if we switched because I would now have to have tools with metric measurements (which would cost me $1000s) for new construction and my old tools for working on existing stuff.

                  As for that article I don’t find many of their arguments to be very convincing especially the numbers they’re using to determine costs. The article they used to get the $6, 100,000 figure for the cost of not switching is from 1915 and even allowing for that is largely nonsense. They mention having to educate on the imperial system. The only education I got about the imperial system was during wood shop as an elective and maybe some in math but that was more to demonstrate fractions and using rulers and such, the focus wasn’t on the units themselves. We spent far more time learning metric during science class. The main article also mentions that converting to metric will save money but don’t explain how this is the case. Then go on to accuse companies that have not changed out their tooling to metric in order to avoid the cost, so it’s very inconsistent. The language they use is also very biased.

                  • Liz
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                    10 days ago

                    I mean, you’re just going to have to take my word on it about Australia saving 10% until I can dig up that proper article, but here’s another article that references American businesses saving money when they switched to metric.

                    Also, dude, you learned imperial in elementary school. You learned it so early it doesn’t feel like you did any learning, but you absolutely spent time on it. I still remember learning all about feet and inches and how to estimate sizes using your body parts (which is a little absurd, considering we were children).