[CAUT] capo bar reshaping

[Paul T Williams]

Hi List,

I'm working on a plate from a 1926 Steinway M that had been breaking lots 
of string along the capo.  Both sections broke about the same number of 
strings per semester.  Upon pulling the plate and looking carefully at 
both sections, the top section was really flat (plus grooved and crusty) 
and the lower section was more pointed like we like, but way deeper 
grooved (and just as crusty). So, my conclusion is that both too deep of 
string groove and too flat a capo surface experience the same amount of 
string breakage.

Now, I can't remember the width of the "peak" of the capo, but seem to 
think along the lines of 0.5mm-1.0mm (top to bottom of whole capo)  Is 
this a bit too sharp? Could someone please remind me the proper "shape" 
before I begin filing?  Do all the string grooves need to be gone?

Thanks for the input!

Paul
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