Wow, you guys are old!![]()
Wow, you guys are old!![]()
Geof - I understand where you are coming from. I was 37 in 73. Had my apprenticeship in Germany and at that time we learned to design by using ISA (now ISO) fits and tolerances.
Upon coming to the US and starting work in the tool room of an international company I soon learned about all the different vocabulary assigned to describe a given "fit". It was no different from what I had seen from the older generation in Germany. Force fit, Press fit, tight press fit, medium press fit etc. . This works fine for the designer who knows exactly what is needed - but does not work on a print. I had to remember my teachers word promoting the use of ISO:" Press fit to an Italian is something different to a Russia or someone in Poland or South America or the US. It also differs from person to person. So, a "push fit" varies from person to person but if you designate "H7/n6" you will get the same fit no matter where and from whom you order".
Very important in today's international market.
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