Bottoming tap made from a tapered starting tap

[Frank S]

I'm sure many have done this, cut the tapered starting threads off of a worn or broken tap to make a plug or bottoming tap out of it.
But a brand new tap? I bought a 3 tap set of 9/16" 18 taps which was supposed to have been starting, plug and bottoming when hte set came in there were 2 starting and a plug, but for what I was doing I needed a bottoming tap.

[DIYer]

Thanks Frank S! We've added your Bottoming Tap to our Tapping and Threading category,
as well as to your builder page: Frank S's Homemade Tools. Your receipt:

Bottoming Tap by Frank S

tags: tapping

[TrickieDickie]

I have taken broken taps and made a bottoming tap. Waste not

[Karl_H]

But a brand new tap?

I had a similar dilemma. I bought a brand new tool and was unhappy with the fit. I considered returning it but decided if I want to be a machinist (even as a beginner) I should fix it myself rather than send it back. That was a watershed moment in my development.

[mwmkravchenko]

I'm sure many have done this, cut the tapered starting threads off of a worn or broken tap to make a plug or bottoming tap out of it.
But a brand new tap? I bought a 3 tap set of 9/16" 18 taps which was supposed to have been starting, plug and bottoming when hte set came in there were 2 starting and a plug, but for what I was doing I needed a bottoming tap.

Pretty much every time I need a bottoming tap!