Laser line for block drilling ? ( Was: Benefits of tilting the piano, instead of the drill press . )

[gordon stelter]

   I've heard 5-7 degrees is what is recommended. I'm
gonna buy a  cheap plastic protractor, and a piece of
wood to stick in the old block hole, and see what Stwy
did originally, and which way they leaned.
     Can't wait to buy that laser! 
     Thump


P.S. If you can't sleep next week, it may be that red
light shining in your window, from up way up north,
here in Ga.....( Bwahahahahaha! )
     

--- Farrell <mfarrel2 at tampabay.rr.com> wrote:

> Gee willakers - I sure am glad I built my overhead
> drill press & track. I 
> wouldn't be able to sleep otherwise! This is all way
> too complicated. Just 
> angle the bit perpendicular to the string (or a
> degree or so more lean) and 
> drill the darn thing.
> 
> Terry Farrell
> 
> ----- Original Message ----- 
> >  If the drill bit is pointed directly toward
> earth's
> > center, and whatever the press is sitting on is
> flat,
> > and level, the pin holes will all be drilled at
> > exactly the same angle, regardless of which way
> the
> > body of the press is turned, as it is moved from
> hole
> > to hole. That is very enticing.
> >     If the far end of the piano is put a little
> lower
> > than the block end, for example, and the block is
> > level to the floor from side to side, the pins in
> > their newly drilled  holes will all lean directly
> > toward the stretcer ( or top, in an upright ) at
> > exactly the same amount. Regardless of whether the
> > drill press was rotated inadvertently, as it was
> slid
> > along from side to side.
> >     Not so if the bit itself is angled, and the
> piano
> > is level.
> >     Because this uniformity is so appealing, it is
> > why I asked if, in actual practice, pianos are
> built
> > this way? ( With the pins leaning toward the
> > stretcher, but perpendicular in all other planes
> ).
> >
> >     Or, instead, do the pins always lean directly
> > away from the string line, regardless of their
> > orientation to the stretcher ? I have a  1923
> Steinway
> > "M" I'm working on. The plate is out and the block
> > still in it, so I'll put some appropriately sized
> > dowells in the holes, and see which it is, in this
> > particular case. Directly toward the stretcher, or
> > toward the stretcher, but modified to keep them in
> > line with the stings?
> >     Of course, one could keep a whole section
> drilled
> > the same in relation to the string line, such as
> in
> > the bass section where they're all basicaly
> parallel,
> > but at an angle to the piano's sides, by jacking
> up
> > one side of the piano, as well as letting the tail
> > down, before drilling. But if one wanted all the
> pins
> > to be exactly in-line with the strings, such as in
> a
> > "fanned out" section, a line drawn through your
> marks
> > on the block, and some means of registering the
> > already-tilted drill press to that line, while
> slid
> > along the plank on top of the piano, would ensure
> > this. That is what I was referring to. Perhaps a
> rod
> > secured to the drill press base, with a  couple of
> > small rods hanging staight down from it. Better
> yet:
> > one of those laser-lines now used on many saws and
> > measuring markers. If the laser line was kept
> directly
> > along the 3 drilling marks made on the new block
> for
> > each unison, as the press was slid fore and aft,
> each
> > hole for that unison would be at exactly the same
> > anglre, and directly away from the string line,
> > without leaning from side to side.
> >     Peace,
> >     G 
> 
> 
> 


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