Trent said:
I am trying to be reasonable here and having trouble. I use taps and dies s little as a dozen times a day professionally, often much more.
When it comes to truly "good" taps and dies there are no such thing as sets. They are all sold piecemeal because a true "set" would be a "how long is a piece of string" situation, between plug, taper, bottoming and spiral flute varieties. To use them you will require a minimum of a 115 piece drill index with fractional, number and letter bits
I am of the mindset that all taps should be high speed steel. "Carbon steel" is a marketing term that means nothing. I am a Widia GTD man. I love them, they are amazing
Hand one to a person who has only ever used Irwin and their eyes will go wide. They cut so clean and fast. Effortless.
If I am repairing a Ferrari Colombo V12 or an Abarth Bialbero cylinder head, I can't risk a so-so thread, they have to be perfect so I splash out on the good stuff.
TLDR: I am a tap and die snob with almost a whole toolbox devoted to the craft. I despise the cheap tap and die handles included with the cheap kits and silently judge people I see using them. All that said, for the dude in his garage tapping a few holes a week. As much as it pains me to say it..... the Irwin will be ok.
I used to use them. The older Snap-On branded Irwin set is what my techs use for day to day work. They aren't sharp but they are pretty dang robust. With a proper sized hole they will cut acceptably clean enough.
I am interested in the HF Icon tap and die set. Says they are Tungsten on the website. The tap handle is a nicer looking piece. According to the cashier at my HF they will replace broken taps for free.
Taps and dies break and get dull. Free replacement is a massive bonus.
Also, get a poster sized tap and drill size chart to hang on the garage wall. It will become your first reference for much more than threading
Thank you!
Machinist here, I use the same tap for many years and can feel when it starts to not cut clean. A coworker over tightens his taps and snaps them all the time, used properly they last a long time.
I'm going to try Widia next time I need new taps.
My $.02, for general purpose I like a three flute, they seem to accept abuse and misuse better than a four for spiral flute. Our CNC guy like the spiral taps the are cut to pull chips up and out.