Have a good think about whether you really need a full thread
engagement or if you can go with a slightly larger tap drill. A few thou
larger on the hole makes for quite a bit less stress on the tap and on
Use the best taps you can, from a good manufacturer (ie: not generally
harware store stuff) and stop using the tap in stainless when it STARTS
getting dull rather than after it is dull. Use a cutting fluid
reccomended for stainless. Good taps are pretty cheap in onesey-
twosies. Buy the size you need when you need it, pretty soon you will
have a set of the ones you use.
Use a tapping guide, to ensure that the tap starts straight, and
That's my two bits worth, anyway.
firstname.lastname@example.org (Shifty Sifter) wrote in message
Use good quality taps, OSG Exo taps work well in stainless.
Use the largest tap drill permitted by the thread class. Bigger hole
equals less material for the tap to remove.
Use a heavy bodied tapping fluid. "Tap Heavy" from Master Chemical is
a good one, there are others.
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