Is there any benefit to turning in pins, instead of driving?

[gordon stelter]

O.K. But here in Georgia it gets really humid (95%)
and stays that way, frequently, so I'm willing to try
anything I can!
NEW SUBJECT! When stringing, is there any benefit to
turning pins in, as opposed to pounding them? Is it
"block-specific", how? Opinions, please!
    Respectfully,
    Thump

--- Ken Jankura <kenrpt@earthlink.net> wrote:
> Thump,
> Will you and RicB please read my posts again. Pins
> in pinblocks get looser
> in winter, tighter in summer. We are on the same
> page here, please already.
> I told you (Thump) I didn't think it mattered if you
> dried the pinblock down
> after it was drilled, and what I meant was I do not
> think that to go from
> some average room RH% EMC down to 32% room EMC is
> enough of a change to
> effect the holes enough to matter. In fact, around
> here, at this time of
> year, you'd have to add moisture to the room to get
> it to 32%. But yes, if
> you dry the block down after drilling, you will
> lessen the fiber tear upon
> pin pounding, to some degree. Go for it, that is a
> good thing. Don't get
> hung up on it as if it is a lifesaver for the future
> of the piano.  I still
> think drying the block down before drilling (if you
> think you must), and
> choosing the optimum drill bit size, will have a
> greater long range effect.
> Like Ron N pointed out, you overstep the fiber
> stress limit when you pound
> the pins in no matter what.
> Ken Jankura
> 
> Previous post excerpts:
> _________
> 
> To summarize:
> Holes in wood act like wood-
> High humidity, wood gets bigger, hole gets bigger
> Low humidity, wood gets smaller, hole gets smaller
> Cross-ply laminated wood does not follow the above
> rule, and sometimes acts
> OPPOSITE, as in:
> Pinblocks-
> Only the wood cells right around the cut edge of the
> inside of a tuning pin
> hole are able to freely shrink and swell with
> humidity changes, as the rest
> of the wood is constrained by the cross-ply
> construction. But those
> shrinking or swelling cells are enough to make
> tuning pins-
> Looser in winter (dry)
> Tighter in summer (humid)
> ______
> 
> Pinblocks are from another planet and do not follow
> the golden wood rule.
> The wood is constrained  from free movement by the
> cross laminations, so the
> only place it can expand or contract is just around
> the cut edges. Wood
> cells shrink just around the tuning pin hole in the
> dry season, so loose
> pins; wood cells swell just around the tuning pin
> hole in humid season, so
> tight pins.
> A piece of wood and a piece of pinblock react
> differently, never ever
> confuse the two or you might get something stuck.
> Read Bruce Hoadley 'Understanding Wood', don't just
> take my word for it.
> 
> ----- Original Message -----
> From: "gordon stelter" <lclgcnp@yahoo.com>
> To: "Pianotech" <pianotech@ptg.org>
> Sent: Monday, March 03, 2003 10:11 PM
> Subject: Re: Drying pinblock before stringing-slight
> clarification.
> 
> 
> > Well, and I think that its sensible enough to
> assume
> > that an old block, where the prime exposure to
> > atmosphere is the little gap around the pins, and
> > where much dimensional change is restricted by the
> > glued-uppedness of laminations, will do its
> expanding
> > (with humidity) TOWARDS the hole!
> >     But that's the last I'll say on it. I remain
> > unconvinced.
> >      Thump
> >
> > --- Richard Brekne <Richard.Brekne@grieg.uib.no>
> > wrote:
> > >
> > >
> > > gordon stelter wrote:
> > >
> > > > I still disagree, Ken. As I have experienced
> > > plenty of
> > > > pianos develop looser pins in winter, when the
> > > > humidity is low
> > >
> > > Gotta agree here...but will be the first to
> qualify
> > > that I have never
> > > reallly checked with an ol torque-o-meter to see
> for
> > > sure. Still.... I
> > > could swear that my general experience is that
> pins
> > > get looser in the
> > > winter when  the air is dry and cold outside,
> and
> > > the heating on the
> > > inside dries things out even more.
> > >
> > > But I respect Kens whats and nots enough to give
> him
> > > the benifit of the
> > > doubt on this one... til I check it for myself.
> > >
> > > RicB
> > >
> > > Richard Brekne
> > > RPT, N.P.T.F.
> > > UiB, Bergen, Norway
> > > mailto:rbrekne@broadpark.no
> > > http://home.broadpark.no/~rbrekne/ricmain.html
> > >
> > >
> > > _______________________________________________
> > > pianotech list info:
> > https://www.moypiano.com/resources/#archives
> >
> >
> > __________________________________________________
> > Do you Yahoo!?
> > Yahoo! Tax Center - forms, calculators, tips, more
> > http://taxes.yahoo.com/
> > _______________________________________________
> > pianotech list info:
> https://www.moypiano.com/resources/#archives
> >
> 
> _______________________________________________
> pianotech list info:
https://www.moypiano.com/resources/#archives


__________________________________________________
Do you Yahoo!?
Yahoo! Tax Center - forms, calculators, tips, more
http://taxes.yahoo.com/