[pianotech] Long european center pIns?

[William Monroe]

Jim,

Unless I am mistaken, one is not meant to draw the birdseye on the long
pins.  The pins are meant to allow you to size a gaggle of flanges.  Once
done, the long pin is removed and and you then can either insert individual
pins in each assy., or go one at a time with the long pin, trimming each as
you go.  I too, would have difficulty understanding how (why?) anyone would
try to push a birdseye along the entire length of the pin, especially one
that has been roughed up to ream.

William R. Monroe

>
> As I work on honing my centering processes, I've ordered some long center
> pins from Jurgen, curious about the how they behave.
>
> One part mystifies me. As I understand it, you point and rough up one end
> of the pin to ream, draw the whole shebang (flange and birdseye) the length
> of the long wire, burnishing in one direction (I guess generating some heat
> as well).
>
> How the devil do you draw the birdseye that distance without it being or
> becoming too loose (not to mention reamed)...or if the birdseye's not too
> loose, don't you do a number on your hands pulling(or rather hauling) it
> along that distance?
>
> I have heard some reports of the initial (frustrating) drop in friction
> being eliminated with this process.
>
> Any exerience on this?
>
> Jim
>
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