Pin Block Boring Jig using a bench top drill press.

[Dean May]

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Hi Warren,
 
I made a small platform, about 12x20", out of 10 or 12 gage steel that I
welded to short columns onto. I had a local machine shop make the
columns for me the same diameter as my drill press columns. I think it
only cost $60-80.  On one end I had them cut them off at a 5 degree
angle. Then I welded the columns, one on each end, onto the plate and
screwed the plate onto a piece of very smooth birch plywood. I place a
new double pin block over the piano as my table. The drill press head
goes onto one of the two columns, depending on how deep the face of the
pin block is below the rim. I can even get a little more adjustment by
turning in the top set screw on the drill press head so that it won't
slip all the way down onto the column. Final adjustment is made by
moving the drill bit in and out of the chuck so that it is just above
the face of the plate. 
 
To move from hole to hole I simply scoot my fabricated platform across
the new double pin block table (clamped to the underside of the rim with
bar clamps. I always have one of my sons holding a vacuum hose at the
drill bit. This keeps debris away and also keeps the bit cool. 
 
I drill right through the new bushings. This makes the pins go in really
easy. 
 
I think I'll be drilling one within a couple of weeks. Maybe I can get
you some pictures. It ain't pretty but it really works. And it is easy
to make.
 
Dean
Dean May             cell 812.239.3359
PianoRebuilders.com   812.235.5272
Terre Haute IN  47802
 
-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Warren Fisher
Sent: Wednesday, July 27, 2005 5:20 PM
To: Pianotech
Subject: Pin Block Boring Jig using a bench top drill press.
 
The one I am interested in has a platform spanning the case and an
angled base for the drill that make the bit go in at the right angle.
You drill the block after the plate is in place.
 
I saw one of these at a convention a while back and now I am thinking I
might try to put one together.  Does anybody have one that you could
send me pictures of? Some hints about how to rig it up would be
appreciated also.
Warren
 
 
Warren Fisher- RPT
Navy Retired - Slidell, Louisiana 
 

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