Air Hammer

Carl Meyer cmpiano@home.com
Sun, 13 May 2001 18:27:30 -0700


But you have your diving helmet on!!!


----- Original Message -----
From: "Joseph Garrett" <joegarrett@earthlink.net>
To: <pianotech@ptg.org>
Sent: Sunday, May 13, 2001 6:20 PM
Subject: Re: Air Hammer


> Carl,
> I hate to tell you this but........Sound carries better underwater. :-)
> [grin]
> Regards,
> Joe Garrett
> ----- Original Message -----
> From: "Carl Meyer" <cmpiano@home.com>
> To: <pianotech@ptg.org>
> Sent: Sunday, May 13, 2001 5:36 PM
> Subject: Re: Air Hammer
>
>
> > Jeannie!!!
> >
> > Your post piqued my curiosity.
> >
> > I  bought one of the danair tools recently.  Boy that was an impulse
> > purchase if I ever made one.  As I mentioned in an earlier post,  they
are
> > available cheaper elsewhere and also different brands, too.  That and
the
> > fact that I have no immediate plans to drive any pins makes that a
classic
> > example of an impulse purchase.
> >
> > I just went out and looked at my prize purchase (at full price, I might
> add)
> > and as I mentioned I drive the pins in before stringing.  You recall
that
> I
> > use a 3/8 bolt with a 1/3/4 long shaft coupler and lock nut  with a 1/8
> > piece of rubber to drive the pins in to an adjustable depth.  Now I
think
> > that if you do this with reasonable accuracy and  you string with three
> > turns there will be no need to readjust the  height of the pins unless
you
> > have not chosen the correct depth.  I would think that if the torque is
> > acceptable and the height of the pins are even, no further work is
> required.
> >
> > The tool has approx. 1/2 inch stroke max and the sleeve surrounding the
> > driving piston is spring loaded extending
> > approx 3/8 inch beyond the max stroke of the piston.  As the sleeve
> contacts
> > a surface it retracts so that a nail etc may be driven approx 1/8 inch
> below
> > the surface.  The diameter of the driving piston will of course
determine
> > the
> > damage or  detent of the surface.
> >
> > I bought the RN16-16 and so I cut off the head of my 3/8 bolt to fit and
> > then it mushroomed.  In retrospect I wish I'd ordered the RN16-75 or 78
so
> > that I could have just left the head on the bolt and minimized the
> > mushrooming effect.  I'll call them to see if I can get those extra
> fittings
> > instead of having to change the tool itself.  I'm sure they will be
> > expensive, too.
> >
> > The brochure by Danair says it is great for underwater nailing.  Perhaps
> you
> > could submerge your piano in a  swimming pool and drive the pins there.
> > Wouldn't even have to wear earplugs.
> >
> > Happy pin driving!!!!
> >
> > Carl Meyer
> >
> > ----- Original Message -----
> > From: "Jeannie Grassi" <jgrassi@silverlink.net>
> > To: <pianotech@ptg.org>
> > Sent: Sunday, May 13, 2001 2:52 PM
> > Subject: RE: Air Hammer
> >
> >
> > > Hi Tom,
> > > Thanks for responding.  Your original post mentioned a blueprint, but
> you
> > > didn't say what was wrong with the original tips and why they can't be
> > used
> > > as-is.  I'm so glad you explained about the difference between
> installing
> > > with the coil on the pin or not.  I put the pins in first without
coils,
> > as
> > > I think Terry mentioned he does it, so I wouldn't run into a problem
> until
> > > later when I wished to even out the height with the coils now on the
> pins.
> > > Oops!  How much of a difference are we talking about here?  Can I
simply
> > > grind the tip down myself?  Thanks for sticking with us on this.
> > >
> > > jeannie
> > >
> > > -----Original Message-----
> > > From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On
Behalf
> > > Of Tom Servinsky
> > > Sent: Saturday, May 12, 2001 6:57 PM
> > > To: pianotech@ptg.org
> > > Subject: Re: Air Hammer
> > >
> > >
> > > Jeannie,
> > > The blueprint, I'm sure is not that necessary, as any one with shop
> > > experience can figure this out.  It's not rocket science..granted.
> > > However, my schedule is hectic as it is and I'm finding less and less
> time
> > > to set aside to fabricate this item.  I was planning on going to one
of
> my
> > > favorite machinists and have him configure it properly.  I would like
> the
> > > tip to work perfect without having to fuss to much.
> > > As my Score adviser lectured me on....concentrate on the things to you
> do
> > > well and find others to fill in the gaps where you are weaker.   I'm
not
> a
> > > great fabricator, thus  finding the perfect blueprint and handing it
> over
> > to
> > > a good machinist makes perfectly good sense ( and cents) to me.
> > > Tom Servinsky, RPT
> > > ----- Original Message -----
> > > From: "Jeannie Grassi" <jgrassi@silverlink.net>
> > > To: <pianotech@ptg.org>
> > > Sent: Saturday, May 12, 2001 11:25 AM
> > > Subject: RE: Air Hammer
> > >
> > >
> > > > Tom,
> > > > I was just about ready to order one.  My question a few days ago to
> > Terry
> > > > was with regard to the tip.  Now, if I have this nice blueprint,
what
> am
> > I
> > > > to do with it?  (Be kind, folks...)  Are you suggesting having
> something
> > > > made up from this blueprint?  And how much will this little item
cost
> me
> > > in
> > > > addition to an already fairly pricey tool?  Just trying to budget
for
> a
> > > > change.
> > > >
> > > > jeannie
> > > >
> > > > -----Original Message-----
> > > > From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On
> Behalf
> > > > Of Tom Servinsky
> > > > Sent: Saturday, May 12, 2001 7:39 AM
> > > > To: pianotech@ptg.org
> > > > Subject: Re: Air Hammer
> > > >
> > > >
> > > > LIST,
> > > > I just spoke with Denair technicians with regards to the Palm Nailer
> > tip.
> > > > They are providing a blueprint drawing of the attachment made for
> > Baldwin
> > > > Co. at no charge.  At one time they produced the correct head for
> > Baldwin
> > > > and eventually stopped producing the part.  They basically said they
> > have
> > > > considered producing it again, especially now that their product has
> > > gotten
> > > > so much attention from the rebuilders, but rather they would send
out
> > the
> > > > drawing or maybe even publish it on Pianotech.  For those in the
same
> > > > position as I ( just bought the nailer and extremely eager to use
it)
> be
> > > > patient and the drawing will be made public very shortly.  They have
> > > already
> > > > done all the homework making the perfect head...take advantage of
> their
> > R&
> > > D
> > > > department.
> > > >
> > > > PS...as a customer friendly company, Denair is tops on my list.
Their
> > > tech
> > > > staff is a joy to deal with.
> > > >
> > > > Tom Servinsky,RPT
> > > > Pianocraft of the Treasure Coast
> > > > ----- Original Message -----
> > > > From: "Jeannie Grassi" <jgrassi@silverlink.net>
> > > > To: <pianotech@ptg.org>
> > > > Sent: Friday, May 04, 2001 6:50 PM
> > > > Subject: RE: Air Hammer
> > > >
> > > >
> > > > > Hi Terry,
> > > > > What tip, or attachment did you use with your Danair Palm Nailer?
> > Does
> > > it
> > > > > come with something that will fit the tuning pins?
> > > > >
> > > > > Thanks,
> > > > > jeannie
> > > > >
> > > > > -----Original Message-----
> > > > > From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On
> > Behalf
> > > > > Of Farrell
> > > > > Sent: Tuesday, May 01, 2001 2:48 PM
> > > > > To: pianotech@ptg.org
> > > > > Subject: Air Hammer
> > > > >
> > > > >
> > > > > Just tried out my Danair Palm Nailer #RN-16-8 for the first time
> > driving
> > > > > three tuning pins into a pinblock. Holy cow cookies! That thing is
> > > slicker
> > > > > than you-know-what!
> > > > >
> > > > > Often as I drove a tuning pin by hand (with manual hammer) into a
> bare
> > > > > pinblock, I could see the damage I did to the top of the hole as
the
> > pin
> > > > > wiggled back and forth with each blow (hey, I'm a newbie!). I'm
sure
> > it
> > > > > continued throughout the driving process. The couple pianos I have
> > > > restrung,
> > > > > resulted in acceptable (for me - I had low expectations), but far
> from
> > > > > perfectly uniform tuning pin torque.
> > > > >
> > > > > The three pins I drove into a bare pinblock resulted in 160
in-lbs.
> > > torque
> > > > > for each one. Not 150, not 170, but all three were like exactly
160
> > > > in-lbs.
> > > > > of torque. I had never done that before. Oh, boy, this has made my
> > day.
> > > I
> > > > > can hardly wait until after I finish restringing and start
> > > > chipping/tuning.
> > > > > Clearly, I am expecting fabulous results.
> > > > >
> > > > > Thank you Del Fandrich and Roger Jolly (and anyone else that
> > > participated
> > > > in
> > > > > that thread - I know there were a few) - I recall that both of you
> use
> > > an
> > > > > air powered hammer, and one of you recommended the Danair
> > specifically.
> > > > Man,
> > > > > you just drive those puppies straight down. I am just absolutely
> > amazed
> > > at
> > > > > what a difference it makes! Fast, easy, and NO tuning pin
wiggling.
> > > > >
> > > > > What do you use as a guide for tuning pin driving depth control?
On
> my
> > > > bare
> > > > > test holes, I used an one-inch-thick piece of hard maple with a
> > > 5/16-inch
> > > > > hole drilled in it. I placed the maple guide over the tuning pin
> hole,
> > > > > inserted the tuning pin, and drove it with the Palm Nailer until
it
> > > would
> > > > go
> > > > > no further. That worked perfect - for a bare block. Now I need to
> > figure
> > > > out
> > > > > what to use when I am driving the pin through the plate into the
> > block.
> > > > What
> > > > > does anyone use? Something hard to physically stop the Palm Nailer
> > from
> > > > > going any further - or do you tape a stick or something to the
> thingee
> > > > that
> > > > > goes over the top of the tuning pin and just watch until it
touches
> > the
> > > > > plate or whatever?
> > > > >
> > > > > Can we adapt this thing for bridge pins - or just way too much
> > > horsepower?
> > > > >
> > > > > Terry Farrell
> > > > > Piano Tuning & Service
> > > > > Tampa, Florida
> > > > > mfarrel2@tampabay.rr.com
> > > > >
> > > > >
> > > >
> > > >
> > >
> >
>



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