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Q.
Which Solvent Is the Best Stencil Cleaner?
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A.
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When it comes to stencil cleaning, the single best answer is "it depends". It depends on the solder paste you are using, the age of that paste, the design of the stencil and how it was made, and whether you are applying it manually or in an automated system, and how often you need to clean and the way you want to clean. It also depends on if you additionally want clean misprinted boards, or the epoxy dispensing systems, or the machinery itself. 
Here are a few recommendations --
For simple, manual stencil cleaning our recommendation would be to use the BGA Stencil Cleaner (#MCC-BGA). Nonflammable, nontoxic and highly affordable, this cleaner vastly out-performs alcohol. One of our most reliable products, the BGA Stencil Cleaner will never let you down. It removes even dried, hardened paste from the tiniest of apertures. It's a great stencil cleaning choice.
If your preference is for presaturated wipes, use the Economy Stencil Wipes (#MCC-MLCW). Our unique "slam shut" lid makes one-handed cleaning easy, and ensures the tubs won't dry out while waiting for the next cleaning event.
For stronger cleaning in a presaturated wipe, jump to the ExPoxy Remover (#MCC-EPX). As the name suggests, this is a more powerful solvent to help remove more difficult contamination, like uncured chip bonders.
In any case, check out MicroCare's broad selection of lint-free wipes to use on the stencils you're cleaning.
Updated 8-10-2008
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