Chris:   The really knotty aspect of this question is that the quality of the robust resistance of the soldermask can vary widely, and solvents perfectly acceptable for some soldermask, are wholly unacceptable for others.   The problem is so bad that we have had to formulate separate products for use depending on the nature of the soldermask.   I do not know if it is the particular soldermask, or how thorough the fabricator is in baking the product after development, but the end result is very widely varied.
What this means is that you are going to have to do a lot of careful testing.
Wish I had better news.
Rudy Sedlak

--- On Tue, 7/21/09, Chris Mahanna <[log in to unmask]> wrote:

From: Chris Mahanna <[log in to unmask]>
Subject: [TN] [spam] Acrylic CC removal
To: [log in to unmask]
Date: Tuesday, July 21, 2009, 11:52 AM

Hello Netters-

Our customer is in dire need for us to remove acrylic CC quickly and without mechanical help (surface is blind to us in an aluminum case).

Destructive testing is to follow. As long as we don't blow through the solder mask, we'll be o.k.

Toluene is typically used, but usually requires mechanical help.  No time for mail order proprietary blends.

Our quick tests show that D-limonene might be a possibility.

Any thoughts?

Thanks,
Chris

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