Yes, with two caveats.
One, do your setup carefully . If the tap bottoms in the hole, chances are
it will snap off.
Two, use spiral fluted taps. These eject the chips up and out of the hole.
Paul K. Dickman
Mike wrote in message ...
Yes you can, but you are wise to select a tap that is suited to the chore.
Spiral fluted taps lift chips, gun type taps drive them in front of the tap.
If you have enough room for the chip, and you don't care if the chip is
difficult to remove, or you intend for it to remain in the hole, gun taps
work fine for blind holes, too, as long as there's a place for the chip to
accumulate. Be certain to lubricate your taps well, choosing a lubricant
formulated expressly for tapping. It's the key to success.
Don't trust to stopping where you think you want to be. Be sure you set a
spindle stop so you don't over drive the tap depth. It's pretty much
ALWAYS a good idea to NOT drive 4 flute hand taps with a tapping head.
Unless you back the tap off roughly every quarter turn, the chip load will
generally break the tap, so that rules out using them in a tapping head.
Extra fine taps are somewhat more forgiving than coarse ones, but none of
them tap well under power.
My Tapmatic 50X's have an adjustable clutch, so that if you do happen to
tap too close to the bottom of the hole... the clutch will slip rather than
breaking the tap. It's not meant as a substitute for the proper set-up and
it's not made to be bottomed out on a regular basis (according to the
warning label)... but it's a "safety" feature that helps prevent broken
That's about all I (think I) know about it... except that it seems to
My smaller "A" and "A1" Tapmatics don't have the clutch... but the
larger "R7" does; so I guess you would have to check the specs before you
Depends upon the tapping head you have. If it has a forward torque clutch,
you will have no problems with hitting the bottom of the hole and damaging
My first experience with tapping heads was putting inserts into plastic
panels. Unfortunately, the holes were odd shaped and not all the same size
so one hole would often stop short of seating while another hole needed to
be watched so that the inserter would start backing out when the insert was
just seated or it would just spin in the plastic, destroying the panel.
Losing weight is easy! If you ever want to lose weight, eat and drink less.
Works evevery time it is tried!
Yep. I will try my darndest to use a good two-flute gun
tap when using the Procunier tapping head. I've done
blind holes with it as well. Typically the first one
is done *real* careful without the stop, to see where
the chip depth at the bottom will bind up the tap.
Then I set the stop to be well away from that zone.
please reply to:
JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com
Being a rookie myself, I checked it out on the web pages.
Mine is depth controlled.
the other trick is to use taps - special for blind that pull chips up.
Otherwise - you will have to clean clean clean.