All,

To clarify my earlier posting....

It isn't that our oven has ever exhibited heat loading 
problems.  In fact, I plan on some heat loading experiments 
to prove this.  I just have an external customer who likes 
to help.  The problem is they are 100% convinced of the 
following:

1)  We absolutely have to have nitrogen on our reflow oven.

2)  We have to place buffer boards before and after each 
production assembly or else our heaters won't handle the 
load properly.

I do appreciate all the responses so far, although more 
opinions are welcomed and encouraged.

Thank you all for your help.

Steve McBride
[log in to unmask]
(405) 624-5281

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