[pianotech] Blocks

[David Love]

It does get the pin a bit more out of the block and I do typically string
that way--four coils on the just the top section.  Traditionally, the block
was drilled at different speeds to get the bass end tighter and the treble
end less tight.  Since many (including me) double drill the block (smaller
pilot hole followed by final drilling taking off only a small amount of
material and thus not heating up the drill bit) the speed issue doesn't
impact the tightness of the pin.  There was a method to the madness of
controlling feed speed but it's a skill, like anything else, that probably
gets fairly refined if you are drilling blocks all day.  Short of that,
getting the pin more out of the block without the bottom coil being any
farther away from the block itself is probably the best recourse.  Of
course, in the "old days" they did both.  

David Love
www.davidlovepianos.com


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Paul Williams
Sent: Monday, October 22, 2012 1:21 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Blocks

Would 4 coils make that much of a difference, Dave?  I've never done that.

Paul


On 10/22/12 3:19 PM, "David Love" <davidlovepianos at comcast.net> wrote:

>An argument for continuing the old tradition of four coils in the top 
>section.
>
>David Love
>www.davidlovepianos.com
>
>
>Not just Steinway. I always speculated that it is because the treble is 
>0.1"
>deeper in the block, the string coil is 0.066" smaller in diameter for 
>the same size pin, and the tension is 200lbs less.
>
>Ron N
>
>