[AT] Spam> OT: Hand threading steel pipe

[Kent Blomgren]

K7jdj at aol.com wrote:
> OK boys and girls,
>
> I occasionally get  involved in projects that require hand threading 1/2 
> inch through 1 inch   black iron pipe.  Lately I have been having trouble with 
> the threads being  damaged.  I bought new cutters for my 3/4 inch die but 
> still  having trouble.  The threads seem to get damaged toward the end of the 
>  cutting process.  I try to get the shavings and chips removed and back off 
>  the cutter to "break" the chips loose but continue to have poor threads.  
> I  use dark cutting oil and lots of air to clean the cutter.  Any  
> suggestions?  A local plumber said it was mostly the "import" pipe and that  hand 
> cutting is difficult because of the lack of continuous motion when using a  
> ratchet type of cutter.
>
> Gary
> Renton, WA  
>
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>   
I had the same problem with 2" black pipe and I was using the dark 
cutting oil.  I switched to Rigid cutting oil and the threads have come 
out perfect ever since.
Kent