America is Really Metric Under The Surface

I admit that lots of things made in the USA are metric. The US standard
inch was officially redefined as exactly 25.4mm. The claim that America
is really metric under the surface seems reasonable until you compare
the price metric stainless rod stock to imperial stainless rod stock
from my regular vendors. Some don't even stock it. From others its at
a premium price. The price difference is so significant I am
considering dragging the follow rest out of the bottom drawer of the
lathe tool cabinet and turning down oversize imperial dimension stock.
Maybe I'm just not looking in the right places.
For example using McMaster-Carr regular 304 nothing special:
7/16 (11.11mm) x 72inches (6ft) long. $31.58
10mm x 36inches (3ft) long. $44.87
I have plenty of other sources that tend to be cheaper than McMaster,
but most of them do not appear to stock any metric stainless round bar.
Those that do are MORE EXPENSIVE than McMaster-Carr.
Is America REALLY metric under the surface? You decide.
Reply to
Bob La Londe
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Bob La Londe on Sun, 6 Nov 2022 11:38:59 -0800 typed in rec.crafts.metalworking the following:
Underneath it all, the US defines the inch in terms of the meter.
Funny detail, Johansson gauge blocks were first made in Metric, and when he started making them in Inch sets, he compromised between the British inch at 25.399977mm and the US 25.4000508mm with - you guessed it - at 25.4mm. De facto at first, that became the definition of the inch since the 1930s.
So yeah, at base, we're metric.
Reply to
pyotr filipivich
In any case I emailed the customers last night and explained that the best price I could find for stainless metric rod increased the price their respective projects. One by about $620 US Dollars over using similar size US inch standard sizes in every case even going with the next larger readily available size. I have two customers right now with similar Metric spec stainless rod applications. I received this reply this morning, "Oh, I thought metric would be cheaper since everybody is metric these days." Both said they would be okay with adjusting the project to use more readily available sizes and keep their project costs in line.
We will literally receive more metal for 25% of the cost.
I know some might suggest turning down the rod, but if I charged my shop rate for standing in front of my lathe it would have cost even more.
Reply to
Bob La Londe
Bob La Londe on Tue, 8 Nov 2022 13:33:33 -0700 typed
"everybody" - except those who are doing stuff.
I realized that the major obstacle to "going metric" is the installed user base. Specifically, all of the machinists who are mentally calibrated in inches, and have a couple thousand dollars in tools which they'd have to replace. Which is in addition to what companies have for QA etc.
Yep. That is another area of under appreciated cost.
Reply to
pyotr filipivich
What sort of commies are you dealing with?
Reply to
Cydrome Leader
I ship all over the world... Okay, not most of Asia so far, but from New Zealand to Sweden and many points in between.
Reply to
Bob La Londe

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