Sorry but I've learned that assuming folks know anything about what they're asking about can be dangerous here. Saw a thread where a first time mechanical mod user couldn't get his Nemesis to fire his TrustFire battery on a sub ohm coil made for him at the store where he bought the setup.Yes, I've seen the Tap, LOL
Only back in USSR we had #1 Tap that shaves less metal and makes primer threads. #2 Tap (sometimes even #3) that finalizes the Full threading. And if we threaded into a dead end hole - we would just run #2 as far as it goes and then grind the Tap 1/3 of it off and finish the job. I guess technology went a long way since then...
They've had all 3 styles here in the US since the days of handmade gunsmith produced powder firing rifles which is where I learned about the different types. Not that I've got anything like the skill of those craftsmen but I find the "how did they do that" information fascinating.
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