Thanks Richard. 
 

I like your analogy, though when you mentioned it my thoughts ran to carp  
the boniest fish I have ever encountered. 
 
The fishbone diagram reference was not from me but from Ingemar  Hernefjord. 
It is impressive. 
 
Best, 
Joe  

 
In a message dated 6/19/2007 2:22:57 PM Pacific Daylight Time,  
[log in to unmask] writes:

Hi,  Joe
I don't believe I have ever seen the fishbone charts that you  describe,
but I do know that Electrovert has a similar chart for  determining the
root cause(s) of wave soldering defects.
And the  IPC-HDBK-001 has Tables that used to be wishbone charts for
individual  processes, such as Table 7-4 (Common printing problems),
Table 7-9 (VPS  problems/solutions), etc, that could become individual
branches on the  fish.

I think a lot of us are just waiting for the same answer as you;  we
would all love to see a wishbone chart by which we can trace back  the
possible cause for a given assembly or solder defect.

But this  particular wishbone chart, if it even exists, would have more
individual  bones than a Minnesota Northern Pike. 







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