Question about pipe taps

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Mark Silva
H-M Supporter Gold Member
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Is there such thing as a bottoming pipe tap? It seems the standard plug type NPT tap can't always go far enough on a shallow hole..but if I grind off the end of the tap then I'll have trouble starting it..
Mark S.
 
They don't make a "bottoming" pipe tap.
What you do is start the thread with a standard pipe tap, then take one and grind off the end to where you need it to go. Try to chamfer the starting edge so it will cut and finish the thread.
I have several in my stuff just for this application.

Jim beat me to it!
 
Yeah, I bet they do. Made to order. I know of one tool supplier in Houston that may stock them, most likely special order them for you.
 
Sounds like buying a box full of used pipe taps would be the way to go...thanks
M
 
Thanks, I just squeeked by with a standard tap but I'm putting some used pipe taps on my to-get Ebay list
Mark
 
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