[pianotech] Brass rail/plate Threads?

[John Ross]

Where is this source of rare taps.
I have often wanted to tap damaged holes or redo some plates.
Schaff just has plates tapped to fit those too long wrong headed screws.
Anyone found a source of the 'proper' screws.
APSCO used to have them, or was it Tuners Supply?
John Ross
Windsor, Nova Scotia
On 2013-02-21, at 6:36 PM, John Ashcraft <jaashcraft at gmail.com> wrote:

> Joe,
> The metric measurement is a real one. I encountered that thread on a Kimball brass rail that I duplicated. My machinist over in Pendleton had to order the tap. It's a rare size.
> --John Ashcraft
> 
> 
> On Thu, Feb 21, 2013 at 9:18 AM, Joseph Garrett <joegarrett at earthlink.net> wrote:
> I'm in the process of making some Chickering upright brass plates and I'm
> trying to figure out what size threads have been used in the original
> applications, the ones in the past and what is used today. Anyone have a
> clue? I have some screws that came with various replacement plates and I
> have a bunch of screws that came out of an original piano brass rail
> applications. Each one is different! Yikes!! I have identified one as 3-48
> threads and another as 3 x 0.5mm, (I think, but not sure, since I can't
> find a tap in that size!).<G>  The real question is the third one, which I
> have scads of along with the scads of "standard" replacements plates which
> I cannot identify in correlation with any known thread/bolt size! Anyone
> have a clue in this regard?
> I've called Schaff and the one guy, (Rob), who "might know" is out of the
> office this week!
> Gosh, I'm having so much fun.
> Help!!!
> Joe
> 
> 
> Joe Garrett, R.P.T.
> Captain of the Tool Police
> Squares R I
> http://gpianoworks.com/
> 
> 


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