Next size larger bridge pins

[Farrell]

----- Original Message -----
From: "Ron Overs" <sec@overspianos.com.au>
To: <pianotech@ptg.org>
Sent: Sunday, September 03, 2000 2:59 AM
Subject: Re: Next size larger bridge pins


> Snip< ....... we consider it important to redrill the bridge pin holes to
> establish a uniform diameter from top to bottom prior to repinning. A 0.1
> mm step drill set  is required for this work.
>
> Regards,
>
> Ron Overs
>
> Overs Pianos, Sydney Australia
> -------------------------------
> Email:   sec@overspianos.com.au
> Website: www.overspianos.com.au
> -------------------------------
>

Please forgive what is likely a VERY basic question, but what is a 0.1mm
step drill set? Is this simply drill sizes that progress from bit to bit in
0.1mm increments? And what guidelines do you use in selecting a drill bit
diameter for a given pin diameter (I presume the drill bit selected would be
some measure smaller than the bridge pin). Thanks!

Terry Farrell
Piano Tuning & Service
Tampa, Florida
mfarrel2@tampabay.rr.com