Ignoramus11107 wrote in
:

I had a chance to thread some 1/2 NPT pipes. The threader worked,
however, the vise (Harbor Freight 4" vise) could not hold the pipe
well, so the pipe would slip. I tightened the vise rather well. This
is a vise with no special pipe holding provisions.

My question is, is the vise somenow not as good as it should be, or
was it simply a wrong tool for the job? Do vises with pipe "slots"
hold round objects better?

i

Flat jaws are not for pipe. You would have had much better luck if you had
clamped a set of v-blocks in the vice to hold the pipe.
Real pipe vices use a chain and serrated V's. (Rigid Industrial).


--
Anthony

You can't 'idiot proof' anything....every time you try, they just make
better idiots.

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