Pipe Thread Tapered End Mill

[jrmach]

Would of been nice to own such an EM with the correct taper as this was a mill job

I did not see such an EM for sale at a few places I checked,,,do they make a pipe taper EM?

Memory serves me right it is somewhere around 1.7 degrees

 

[moonlight machine]

Would of been nice to own such an EM with the correct taper as this was a mill job

I did not see such an EM for sale at a few places I checked,,,do they make a pipe taper EM?

Memory serves me right it is somewhere around 1.7 degrees

Once it is tapered how did you plan on cutting the threads? NPT thread mills are available, That's how I do it.

 

[triumph406]

Would of been nice to own such an EM with the correct taper as this was a mill job

I did not see such an EM for sale at a few places I checked,,,do they make a pipe taper EM?

Memory serves me right it is somewhere around 1.7 degrees

Your looking for a pipe tap reamer

McMaster-Carr

I don't waste time with pipe tap reamers, drill correct size, then tap, saves a step.

 

[SeymourDumore]

I have not found any either the last time around, so after getting pissy about it I just took 10 pieces of 4fl and 5 pcs of 3fl endmills of 1/4 and 1/2 size, gave it to
the grinding house and with a 1 day turnaround I've got my very own NPT tapered endmills.

Yes yes yes, I know you can just drill and tap, but in my case it's petty little to spend to get absolutely perfect NPT threads.
At 30 pieces total, I think I've paid maybe $6/ea?

For aerospace you can't get away without it anyway.

 

[jrmach]

Your looking for a pipe tap reamer

McMaster-Carr

I don't waste time with pipe tap reamers, drill correct size, then tap, saves a step.

guess I should of been more clear,,,,external threads is what I wanted it for,,,like to do a boss out in the middle of a part.

 

[jrmach]

Once it is tapered how did you plan on cutting the threads? NPT thread mills are available, That's how I do it.

uh thread mill ,,just to be clear,,,external threads

 

[Bobw]

The taper is 1'47" so 1.78 degrees per side...

Off the shelf 1.5 or 2 degrees per side tapered endmills are easy to get
and relatively cheap.. Should be close enough, considering you can
get away without tapering an internal thread.

 

[tooldude328]

Carmex Tool makes 1.47 degree tapered end mills for thread milling part # SC 0375 D09 MT7

 

[wms]

Carmex Tool makes 1.47 degree tapered end mills for thread milling part # SC 0375 D09 MT7

Second the Carmex stuff. Use them all the time..

 

[Cycle1000]

Direct link
Carmex Precision Tools, LLC. - SC375D9MT7

 

[JR1de57]

Carmex Tool makes 1.47 degree tapered end mills for thread milling part # SC 0375 D09 MT7

Thanks helped me out!