[pianotech] Tuning wrench tip threads?

[David Nereson]

----- Original Message ----- 
From: "Jack Reisland" <reislandj001 at hawaii.rr.com>
To: <pmc033 at earthlink.net>; <pianotech at ptg.org>
Sent: Wednesday, September 02, 2009 11:02 PM
Subject: Re: [pianotech] Tuning wrench tip threads?


> 1/8" tapered pipe thread is based on the plumbing industry 
> standard  that has no reference to the actual dimension of the 
> pipe. For  example, an 1/8" pipe is actually 13/32" outside 
> diameter. I have no  idea why they use these standards. The 
> pipe threads are tapered so  that they tighten as they are 
> screwed together. I fear I need a metal  lathe to turn a 
> matched tapered thread.
>
> Best Regards, Jack Reisland
  >>> Best Regards, Jack Reisland

    Why not a standard pipe die?
    --David Nereson, RPT