Double drilling pinblocks: Hand held versus drill press.

[Michael Spalding]

Ric,

I'm wondering if your success, and others' not-so-success, is related to
the pinblock material being used?  You know, the maple blocks require a
smaller drill, and are more forgiving, and the Falconwood/Delignit type
blocks require a larger drill and are much less forgiving.  Which block
materials figured in your success?

thanks

Mike


> [Original Message]
> From: Richard Brekne <Richard.Brekne@grieg.uib.no>
> To: Pianotech <pianotech@ptg.org>
> Date: 2/8/2004 7:03:22 PM
> Subject: Re: Double drilling pinblocks: Hand held versus drill press.
>
> Farrell wrote:
>
> > Try it and let us know. .....But don't do it on my piano!!!
> >  
> > I would most certainly be surprised if you had good even torque. Use 
> > the drill press.
> >  
> > Terry Farrell
> >  
> >
> > > I'm not sure we're talking about the same thing.  I'm refering to 
> > pinblock
> > > drilling in two passes.  If your final bit size is to be .261", then
you
> > > predrill at .250" and on a second pass, drill the remaining .011".  
> > On the
> > > second pass, because so little material is taken, you don't have to 
> > worry
> > > about feed speed and the drill heating up.  My question is whether
that
> > > allows you to drill with a hand held and still be accurate without
> > > enlarging the hole. 
> > >
> > > David Love
> > > davidlovepianos@earthlink.net <mailto:davidlovepianos@earthlink.net>
> > >
> > >
>
> I've done maybe 15 blocks through the years with hand held drills doing 
> a two pass drilling. Lots of techs do this both with pin blocks and with 
> bridge pins. Works just fine. No problems with torque in pinblocks 
> whatsover. Main difficulty seems to
> be that of  getting consistant angles.  You need to practice a bit, and 
> a round bubble level affixed on the drill so that the bubble shows level 
> when you are on angle helps... probably other cute ideas to help.
>
> Cheers
> RicB
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