Tuning Pin Angle

[Mike Spalding]

Ron,

Definitely have not had that problem.  I'm using Delignit blocks, and 
the pin is started in the hole with a sledge until it can hold whatever 
low tension is on the string before finishing up with the nailer.  In 
fact, I often end up with more forward lean than I want.  I was thinking 
about changing my drilling angle, but maybe it's my nailer technique??

Mike

Ron Nossaman wrote:
>
>> That's the way I see it. What do others have as a preference for 
>> tuning pin angle relative to string angle?
>>  
>> Terry Farrell
>
> I like somewhere around 88°. That corresponds fairly well with the 
> coil takeoff angle from the pin. Getting that angle is another 
> problem. When I was driving pins with my 4lb hammer, I could drill the 
> block at a specific angle and the pin would be at that angle after I 
> drove it in. Since I started using a palm nailer, things changed. For 
> reasons I haven't been able to define, pins driven with the palm 
> nailer, especially if there's some tension on the string, will migrate 
> and rotate toward the bridge. I've had a couple of pianos end up with 
> the pins nearly on the rear edge of the plate webbing holes, and with 
> little or no back lean. Using a transfer punch larger than the pin, 
> and smaller than the plate hole, I can mark the pin locations forward 
> of center, and add a couple of degrees to the drilling angle to get 
> the things to center at  the pitch angle I want after driving them.
>
> Who else has run into this with palm nailers?
> Ron N
>