Odd pin block

[Shawn Brock]

Ron,
is it possible to send us a picture of your drilling set up?  Or maybe a 
description?  I loved your class in Salt Lake but was not present for your 
discussion on pin block drilling.  Thanks for all you add to this list.  It 
means a lot to a lot of people!
----- Original Message ----- 
From: "Ron Nossaman" <rnossaman at cox.net>
To: "Pianotech List" <pianotech at ptg.org>
Sent: Friday, May 25, 2007 9:25 PM
Subject: Re: Odd pin block


>
>> When I double drill, since accuracy is the point,
>> it's hard to center the second pass on the first hole unless I switch 
>> bits before moving on to the next hole...a real pain.
>>
>> I assume you don't change bits for each hole, right?  If you come back to 
>> all the 1/4" holes for the second pass,how do you spot the center.
>>
>> Jim I
>
>
> All the 1/4" holes first, then all the 6.8mm. Just one bit change between 
> passes. It has always been my impression that it would be difficult not to 
> center the second pass. I drill in the piano, with my hovercraft drill 
> press setup, and the second pass seems to center pretty much automatically 
> with a regular jobber bit. Maybe there's a potential problem I'm not aware 
> of here. What sort of drilling rig and procedure do you use?
> Ron N
>