Key Bushing Cauls-sizing wrecked mortices

[gordon stelter]

I'll bet Terry could make some ultra-tough, thin
laminate for mutilated sharps.
     Thump

--- Ric Brekne <ricbrek@broadpark.no> wrote:

> Hi there William
> 
> When I run into mortices that are wrecked its always
> been because 
> someone has botched a rebushing job. Removal of old
> bushings seems to 
> stump more then the occasional tech it would seem. 
> That being the case 
> its just the surface area and perhaps 3-4 mm into
> the mortice that is 
> ruined. Removing 5 mm is plenty in any case as new
> bushings shouldnt 
> really be any more then 3 mm deep anyways.  Wood
> inserts to bring the 
> surface area up to the origional height are easy
> enough to manufacture. 
> Just need to be the width of your channel. Using the
> inside of the 
> remaining mortice as a guide, glue them so they are
> flush, trim (sand) 
> the sides of the keys as neccessary. Only tricky
> part is if you have a 
> black key that is to thin on one side of the mortice
> to really glue a 
> new piece into. You skip that side :) Yep I've done
> this.  Very similiar 
> really to a routine described here a while back  for
> redoing balance pin 
> holes.  
> 
> Cheers
> RicB
> 
> Ric,
> 
> Have you done this?  Am I reading correctly that you
> would rout a channel,
> glue in "shims", and then rout the final product to
> the proper dimension?
> Or are you machining inserts that are properly
> sized?  I would think it
> would be rather difficult to machine inserts, glue
> them in and come out with
> a properly sized mortice, no?
> 
> I'd appreciate a clarification.
> 
> Respectfully,
> William R. Monroe
> 
> 
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