Well maybe you could consider a costing exercise on your options to compare
to buying (with pro and con list for non economic factors:
Here are some ideas, which may excite some informed comment.
- Renting is a possible option for process set up and then either
periodically renting or sending out to an outside lab for ongoing
verification.
- Chopping your work up.
- Making a same size test panel with removable inserts to simulate critical
areas. (very large components or dense areas)
- Alternative methods.
Shouldn't take long to set up a quick and dirty spreadsheet to point you in
the right direction.



Regards

Mike 


 

-----Original Message-----
From: Louis Hart [mailto:[log in to unmask]] 
Sent: Saturday, March 03, 2012 12:33 AM
To: [log in to unmask]
Subject: RE: [TN] under-mask cleanliness of large panel

Thanks, Mike. You may have seen Shean's mention of Ionographs with big
tanks. I'm not sure what we will do in the end. We rarely see panels as big
as the one I mentioned.

When I worked here before, about 15 years ago, I remember putting the end of
one of my not-very-big fingers on a normal-sized panel and running the
Omegameter. I think it was the most contaminated thing we ever saw, by a
factor of at least 4. Louis

-----Original Message-----
From: Mike Fenner [mailto:[log in to unmask]] 
Sent: Friday, March 02, 2012 5:51 PM
To: 'TechNet E-Mail Forum'; Louis Hart
Subject: RE: [TN] under-mask cleanliness of large panel

One of the original reasons for the introduction of machines was the
difficulty of doing repeatable tests by hand. For example "hygiene" on all
glassware has to be perfect as a single finger print can send you off scale.
The machines self clean themselves and as importantly their working fluid.
Get a bigger tank!

Regards

Mike 




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