Ibach Broken Plate& interesting bass set up

[Erwinspiano at aol.com]

Hi JD
  Agreed. Yes I'm familiar with the void issue.  It seems like  the open face 
set ups are the most prone to this malady.  I've repaired two  identical 
Victorian Weber's in this way.  In there future I will simply  apply epoxy to fill 
the voids & thern set the plate right in and bolt it  donw.  That out to 
solve the viod problem Especially with the addition of  one of the super strength 
epoxy fillers.
 
 Dale

The last  Ibach I did that had a cracked metal frame was a 6-footer of 
about this  age, and what I discovered was that the wrestplank was not 
properly mated  with the frame (Am. 'plate') webbing.  Since there was 
a hollow under  (at least one of) the screw holes, the webbing had 
been forced to bend as  the screw was tightened and great stress was 
introduced.  Luckily I  noticed the crack and was able to alert the 
customer before de-stringing,  because when the tension came off the 
crack opened up right  through.

I had the frame  stitched
<http://www.locknstitch.com/Metal_Stitching.htm>

by Metalock
<http://www.metalock.co.uk/castingrepairs.asp>

I'd  bet the cause of your crack is the same.  There is no other 
obvious  reason why the casting should break at that point, since 
there is no  internal stress.  Provided you work down the plank and/or 
fill up to  ensure close contact with the casting all along, there 
should be no  further problem.

JD


 



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