You can find the partial answer in the EP&P, July 96, pp. 32-36,
"Improving Screen Printing Yields". Hope it will help.

Quyet P.
 

>----------
>From: 	Dirk Bellamy[SMTP:[log in to unmask]]
>Sent: 	Wednesday, July 03, 1996 7:56 AM
>To: 	[log in to unmask]
>Subject: 	ASSY: Ultrasonics
>
>Hey technetters!
>I was wondering, does anyone out there have experience with
>ultrasonics?  Specifically, we are looking into the possibility of
>acquiring
>an ultrasonic stencil cleaner for SMT screens contaminated with low
>residue paste.  
>Could anyone out there give me reasons why ultrasonics are or are not
>worth the expense?
>Thanks!
>-Dirk Bellamy
>MFG Eng, Current Electronics Inc.
>[log in to unmask]
>
>
>

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