3 ms·
The Italian bottom bracket threading standard is completely insane. Like, how do you even cut that, and why would anyone come up with that in preference to lite
by mauvehaus 2y ago
The Italian bottom bracket threading standard is completely insane. Like, how do you even cut that, and why would anyone come up with that in preference to literally anything else?
- analog31 2y agoThe only thing I can imagine was a supply of American machine tools from the rebuilding of Europe after a WWII. You can always cut any diameter, only the thread pitches are ruled by the capabilities of the lathe. Also, left handed threads involve their own issues since the spindle chuck wants to unscrew itself.