Don't know if this is just a UK thing but its a taper tap, a intermediate tap and a Plug (what he's called a bottom).
I could be wrong but that's always what we call this
You sometimes can, but having more taper means you can get the tap started a lot easier and you can get it started straight easier too. In my experience, a plug tap is enough taper, it is still nice to have an option of more taper if needed.
Oh, one more thing. The more taper there is, the stronger the first full cutting edge is. The cutting edge that is last on the taper and cuts a complete thread. If that chips, the tap won’t cut right. So, using a bottoming tap with barely any taper can sometimes be bad for that first thread since it is cutting more at once instead of gradually cutting more with a larger taper. That isn’t a typical problem, but it has been something I’ve had to deal with when I’ve ground away that taper completely. Not ideal, but nothing I do in my line of work is ideal lol.
Related question - how can you ensure the tap goes in straight?. Is the pilot hole diameter closly matched to the starting diameter of the corresponding tap? Is there any special skill involved?
Honestly, I wish I could tell you. I have struggled with that myself in recent months. Very nearly messed up some expensive stuff in the process.
Some things that have seemed to help me are applying even pressure to the tap so it doesn’t cut more on one side than the other, and making sure there is enough downward pressure to get the tap started. If there isn’t enough downward pressure, it won’t start cutting the helix it needs to make a good thread. Instead, it will start by functioning like a drill, where it just makes the hole bigger before successfully creating that helix. When the start of that hole is bigger, it makes the beginning of the thread too loose and therefore probably not good enough for most applications. I got lucky that when I accidentally did that, it was for a commercial customer whose part wasn’t very important.
Love the cutaways
That and the emotional music; I got the feels.
I'm the shipping manager at Hougen where the Mag Drill he is using is made. Crazy seeing the product randomly on Reddit.
Interesting.
Tbf I thought of types of Water Taps (faucets) upon first reading the title 😐
Don't know if this is just a UK thing but its a taper tap, a intermediate tap and a Plug (what he's called a bottom). I could be wrong but that's always what we call this
In Aus we call them starter, intermediate, & advanced.
Yep. Taper, plug and bottoming are USA names
Also work in metric not imperial anymore
Use both imperial and metric
That’s cool. I’ve never seen taper taps.
Nice demo.
Huh….neat
Even more about taps!
I'd tap that.
Um, the music was nice! It's a Christmas miracle! Also, thanks for the video!
The music seems super familiar but I can’t quite place it
It's called Money all Suite from Moneyball
Link to YouTube
Hey thanks!
Perfect tool gif
This music is for someone learning to walk again after an accident
Did he tap them dry??
Why not go straight for a buttoning tap instead of using the plug first and then buttoning?
You sometimes can, but having more taper means you can get the tap started a lot easier and you can get it started straight easier too. In my experience, a plug tap is enough taper, it is still nice to have an option of more taper if needed.
That makes sense, thank you
No problem.
Oh, one more thing. The more taper there is, the stronger the first full cutting edge is. The cutting edge that is last on the taper and cuts a complete thread. If that chips, the tap won’t cut right. So, using a bottoming tap with barely any taper can sometimes be bad for that first thread since it is cutting more at once instead of gradually cutting more with a larger taper. That isn’t a typical problem, but it has been something I’ve had to deal with when I’ve ground away that taper completely. Not ideal, but nothing I do in my line of work is ideal lol.
Related question - how can you ensure the tap goes in straight?. Is the pilot hole diameter closly matched to the starting diameter of the corresponding tap? Is there any special skill involved?
Honestly, I wish I could tell you. I have struggled with that myself in recent months. Very nearly messed up some expensive stuff in the process.
Some things that have seemed to help me are applying even pressure to the tap so it doesn’t cut more on one side than the other, and making sure there is enough downward pressure to get the tap started. If there isn’t enough downward pressure, it won’t start cutting the helix it needs to make a good thread. Instead, it will start by functioning like a drill, where it just makes the hole bigger before successfully creating that helix. When the start of that hole is bigger, it makes the beginning of the thread too loose and therefore probably not good enough for most applications. I got lucky that when I accidentally did that, it was for a commercial customer whose part wasn’t very important.