bridge cap headache

Clyde Hollinger cedel@supernet.com
Sat, 08 May 2004 07:16:33 -0400


Friends,

Yesterday I worked for hours on a 1974 Baldwin spinet that had been long 
neglected -- replacing all donut grommets and regulating lost motion, 
replacing a torn string, tightening screws, cleaning, etc.  I had done a 
pitchraise and tuning at a previous appointment.

The bridge cap was unglued for the top four notes A7 and up and broken 
loose as well.  Although I am not skilled at bridge repairs, I thought 
this looked simple enough to glue in place.  Stupid me.

I got the action and strings out of the way and checked the 
positioning.  OK, I guess, although if I pushed the piece together at 
the crack, the cap didn't line up with the bridge.  My strategy was to 
put glue on the piece and hold it in place by putting the strings under 
tension until it dried.  Not smart, especially if there is negative 
bearing, which I soon learned.

So I held the piece in place while drilling a pilot hole for a screw.  I 
wasn't surprised that when I tightened the screw, it pulled the piece 
out of proper position.  I didn't really have room to drill straight in 
since the keybed and frame were in the way.  Grrr!  I left it that way 
to dry, told the owners I will need to return to finish up, and went 
home very tired and blue.  It is a repair I hope no one ever knows I 
did.  In retrospect, I think I should have used CA glue with 
accelerator, but I was concerned about it drying too quickly for me to 
get it properly positioned.

Okay, so you guys with lots of experience, how would you have handled 
this?  I'm still open to learning.

A couple last questions.  The bridge cap is now a little farther down 
than it should be, maybe 2mm.  Will the added string length cause the 
strings to tear when I bring them up to pitch?  And if they do, should I 
try replacing them with thicker or thinner strings?  They're size 13 
now.  It seems that a thicker string would have more strength, but I'm 
not that good at physics.  Would a thinner string be better?  (I don't 
stock thinner string.)  I'm eager for your responses, and I hope I don't 
have a day like yesterday for a long time to come!

Regards,
Clyde


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