keyframe bedding

[jolly roger]

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Hi Jon,
              Don't you just love refixing,  butcher jobs.  The easiest fix is
to get some 1/4" width iron on birch  edging material.  Good cabinet suppy
companies stock it.  Iron and Press it on real firm , so you see some squeeze
out.Just apply on the bad section.   Then roughly bed the front rail. Now
use a
full length, so there is no seam.  This will give you a low friction lip for
fast pedal operation.
Bed front rail, then recheck the back rail, finally set the balance rail
gluide
bolts.

PS Saw kerfing will not work so well with this type of problem

Hope this helps.
Roger





At 11:10 AM 3/19/02 -0500, you wrote:
>Hi list,
>I have an older Baldwin M that has bedding problems.  The back rail 
>beds nicely, but the front rail has a gap of 1/16" at the bass end, 
>then the gap tapers to being bedded at around middle C - this is with 
>all the glide bolts out of the way.  It appears that at some point, 
>the front rail was dramatically sanded; there are lots of sandpaper 
>marks on the front rail.  When I use a straightedge to examine the 
>arch of the keyframe from back rail to front rail, there's a space 
>between the straightedge and the balance rail except at the bass end. 
>At that point, the straightedge touches the balance rail and there is 
>a space between the front rail and the straightedge.
>
>The courses of action I'm considering are: sand the balance rail at 
>the bass end until the front rail can be bedded or rout out a chunk 
>of the front rail and put in a new piece of maple.  Any suggestions? 
>Advice?  Thanks!
>
>Respectfully,
>Jon
>
>Jon Ralinovsky
>Piano Technician
>Department of Music
>Miami University
>513/529-6548
> 

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