Action Rail Hole Spacing

[Delwin D Fandrich]

Sarah, et al.,

I should have added that this is how it would have been done if the piano had
actually been designed in-house. Only a very few were. As is still common today
most "new" designs were actually just loose copies of older existing designs,
modified just enough to disguise their origins and, perhaps, to add a favored
"feature" or two.

Del

Delwin D Fandrich
Piano Designer & Builder
512 Hanna Avenue
Aberdeen, Washington 98520
USA
Phone  360.532-2563
Fax  360.537-1262
<mailto:fandrich@pianobuilders.com>
<http://www.pianobuilders.com>


> -----Original Message-----
> From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On
> Behalf Of Delwin D Fandrich
> Sent: April 22, 2004 1:23 PM
> To: Pianotech
> Subject: RE: Action Rail Hole Spacing
>
>
> I guess the question is "the precision with which one is to do the work." Or,
> more appropriately, "the precision with which the work was originally done."
> These scales were laid out on paper tacked to a solid wood panel. True, the
wood
> panel would have had stiffeners screwed, not glued, to the bottom side. But,
> still....
>
> The spacing would not have been developed mathematically but by the use of a
> layout fan as illustrated in the attached drawing. The two end points
> would have
> been marked off along the hammer strike line with a pencil line and/or a
> pin-prick and the layout fan would have been arranged across until the
> appropriate (as determined by the eye of the designer) spacing was achieved.
> Then the appropriate points would have been pin-pricked through and the points
> drawn in by hand with pen and ink.
>
> Precision even to the width of a pen or pencil line is beyond what most of the
> early piano designers and builders would have achieved. Or even attempted.
>
> Del
> Delwin D Fandrich
> Piano Designer & Builder
> 512 Hanna Avenue
> Aberdeen, Washington 98520
> USA
> Phone  360.532-2563
> Fax  360.537-1262
> <mailto:fandrich@pianobuilders.com>
> <http://www.pianobuilders.com>
>