[pianotech] broken grand acton screw

[Isaac Sadigursky]

Randy and Joe!
This "Tingee' is called 'Broken Screw Extractor'.It is a hollow cutter  
with Very Sharp Teeth.
Pianotek sells it,page D-30,part #BSE-1, 1/4" dia.
it is also available from Woodworkes Supply Catalog.
In my class in Las vegas I gave a demonstration on how simple it is to  
use it.
Larger dia 3/8"  Screw Extractor #BSE-2 is capable of drilling counter- 
clockwise in Pinblock  material to extract broken Tuning Pin or large  
#12-#18 screws.
Plugging the hole and re-drilling is a standard procedure.
It worth trying.
And don't forget to practice on a piece of board.
good luck!
Isaac Sadigursky, RPT.
Los Angeles Chapter.
On Jul 15, 2010, at 10:34 PM, Joseph Garrett wrote:

>
> Randy C. asked: "Could use some advice. I am rebuilding a 1883  
> Steinway grand for a
> client and when I took the stack off, one of the screws snapped. I
> used a soldering gun to heat up the screws when I realized they
> weren't coming out easily, which helped with all but that one. Turns
> out the last guy who worked on it glued the screws in. Go figure. Its
> buried about 1/4" below the surface and of course the screw surface is
> jagged. I know that a pilot hole should be drilled into the screw
> fragment and then use the screw extractor. My question is, how do you
> drill into steel thats imbedded in wood with damaging the wood? Even
> using a punch first would be difficult. Any body have any miracle
> thoughts?
> Thanks"
>
> Randy,
> I'd suggest using hollow cutter that will allow the screw to go up  
> the center of the cutter and cut a hole for a standard size cut  
> plug. I don't know the name of these thingees, but they work well. I  
> got some from various woodworking stores/catalogues. I even made one  
> out of steel rod. You chuck it in your drill. put the drill in  
> reverse and the cutter cuts down and when there is a bit of the wood/ 
> screw in the cutter it will back out the rest of the screw. Just  
> slicker'n a bugger on a door knob.<G> plug it with a cut plug. drill  
> for the new screw and you're good to go.
> Joe
> Joe
>
>
> Joe Garrett, R.P.T. (Oregon)
> Captain, Tool Police
> Squares R I
>
>
>