RoyJ wrote:
Hope someone can settle an argument: The part is a 1" long x 3/8" OD x
3/16" ID brass bushing that needs a 6-32 set screw. Tap drill goes all
the way through both walls for convenience. Hand tap with straight
flute tapered tap and 'T' handle. Quick prototype level part, only
making 2 of them, precision not required.

Questions: tap dry or use what lubricant? Backup the usual 1/3 turn to
break the chip necessary on this part?

I dry tap brass 5/16-18 fairly often . Works for me , a sharp tap works best
(duh) .

--

Snag aka OSG #1
'90 Ultra , "Strider"
The road goes on forever ...
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