On 2011-05-11, Bob La Londe wrote:
On 5/10/2011 7:08 PM, DoN. Nichols wrote:
[ ... ]
Yes -- if they have done a clone of the Jacobs tap chuck, there
are two things to tighten.
First -- the pair of plates which clamp down on the square end
of the tap to prevent spinning.
Second -- the RubberFlex collet to hold it concentric and
parallel to the axis.
I'll have to look at it more carefully. It looked to me like just the
rubber flex collet tightens on the tap. I'll pull the collet and closer
off and shine a light down it and see.
The plates are adjusted by an Allen screw behind the bulk of the
collet closing cone. It is double threaded -- left hand on one end,
right hand on the other end, so the plates separate or close
symmetrically. The plates and screw are sort of rattle lose in there
until you clamp down on the end of the tap.
[ ... ]
You don't have any spiral point (gun) taps on hand? I tend to
prefer those even for hand tapping.
Heck, until a few months ago I never even knew what they were for. Had
some come in this afternoon though.
The spiral flute were the ones you got, I thought -- not the
spiral points. (Unless you got some of each at the same time.) The
spiral points are better for through holes, the spiral flute for blind
holes -- with the exception of the combined drill and tap which I just
mentioned in another part of this "thread", where the spiral tap flutes
are the same spiral as the drill part (of course), and with the drill
there too, you can't play the game of blind holes. :-) For the 1/4-20
drill tap, there is enough thread to drill and tap through 1/2" plate.
[ ... ]
Its a lot better than I expected at a cost of only a yard and a half
brand new including freight.
This is the second time you have mentioned "a yard and a half"
as a price.
Sorry, that's a cash term from a certain shady trade.
Single = $1 bill
Fin = $5 bill
Sawbuck = $10 bill
Double = $20 bill
Half = $50 bill
Yard = $100 bill
O.K. I was familiar with "Fin" and "Sawbuck", and "Single" is
fairly self-evident, but the others were unfamiliar. Hmm ... from
Loan-sharking? Betting?
Thanks,
DoN.
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