The caution with laser singulation is that the laser will carbonize the FR-4 along the edge. That is not a concern so long as the copper does not come out into that area.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Tuesday, December 31, 2013 9:00 AM
To: [log in to unmask]
Subject: Re: [TN] super fine score cuts

Morning Guy,

Wow! 1.24 mil score! I wonder how that was done? Laser? Water-jet?
Here's the pictures:

http://stevezeva.homestead.com/micro_v-score.jpg

http://stevezeva.homestead.com/panel_edge_230x.jpg

From the panel edge photo, it looks like there's no "V" relief to allow for any sort of real singulation in the conventional way that you use a V-score.

Best has a laser that can be used to de-panel something like this:

http://www.solder.net/services/laser-services/

Steve 

-----Original Message-----
From: Guy Ramsey [mailto:[log in to unmask]]
Sent: Tuesday, December 31, 2013 6:31 AM
To: Steve Gregory; 'TechNet E-Mail Forum'
Subject: super fine score cuts

Hi Steve,
We have a 3 inch square panel of 144 little boards. They have the finest little score cuts I have ever seen. 
Each one has a tiny embedded device. I am afraid to break them apart. 
Wondering if you can post the pictures, and if you or anyone on Technet has a good idea for how to singlulate the boards. 

Thanks,
Guy
 

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