247 Novel Tap Follower Design

Link:
www.aliexpress...
Please Note: I am a beginning machinist and I do not pretend to know everything. Please always operate machinery in a safe manner and if you don't know, find a reliable source. DO NOT COPY ME. I make a lot of mistakes. I provide these videos for entertainment only.

[@RRINTHESHOP]

Nicely done Robert.

[@ensen89]

I want to mention some things that I have not figured out myself but saw on other youtube channels about machining. I am not going to mention them because some content creators think about that as rudeness or advertisement for other people and I don't know your opinion about that.
1. Solid carbide endmills (at least the emperial ones sold in the US) tend to cut a little undersized. I picked that up in a video about machining precision pin holes. The machinist predrilled the holes with a standard spiral flutet drill, than he used a solid carbide endmill like it was a reamer to ensure the hole is straight and on exact location and than he finally brought it to size with a reamer. Drill bits can wander of a little and the reamer will follow that. The endmill does not.
2. This type of tap follower is nice for the big taps with the center drilled hole. For the small ones it is not so easy because those tap handles you showed can intodruce a lot of wobble into the operation. I was totally surpriced when I first saw that. It is better to have a spring loaded tap follower like you just made but instead of a point you have a concave center drill on there that directly engages with the point on those small taps.
I can give links to those videos if interested but again, not wanting to advertise other channels here.

[@DudleyToolwright]

Those are are really good points. I had not considered a concave follower. That would be a great idea for small taps. The Follower with the tap handles works pretty well, if the tap handles are well made.
My comment about the hole being undersized is just based on my experiences. I find that, in general drilling with an endmill makes holes on size or a little bit oversized. This hole was about 0.0015" under. Perhaps my previous setups involved some amount of runout that made my observations what they were.
Thank you very much for the really interesting bits of info.

[@CraigLYoung]

Thanks for sharing 👍 surprising you didn't notified Mr. Chaos

[@DudleyToolwright]

😉I have Nairobi and Cairo to worry about. They would love Mr. Chaos.

[@hilltopmachineworks2131]

Your welcome buddy! The large ground plate came with the hardness testers. Since you are making space ship parts now I figured you could use the .0001 indicator. 🙂

[@DudleyToolwright]

Thanks, Tom. That was really generous.

[@kentuckytrapper780]

Great video Robert, keep'um coming..

[@DudleyToolwright]

Thanks. Always appreciated.

[@RustyInventions-wz6ir]

Very nice work. Good video

[@DudleyToolwright]

Thanks. I appreciate the comments.

[@stevenhintz5508]

Watch Joe Pi’s video on using the center in a tap handle, not always accurate

[@DudleyToolwright]

Joe Pie's channel has consistently great information. Thank you.