To see Sn grain boundaries , don't etch.  Use cross-polarizers.



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of [log in to unmask]
Sent: Thursday, March 21, 2013 10:53 AM
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Subject: [TN] SAC 305 etch

What would a good etch be for etching SAC305 solder joints to enhance 
viewing grain boundaries?

Thanks,
John

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