We also measure height and volume (with Koh Young KY-8030L).
There is no need to measure stencil thickness anymore.
Only when printing deposits stay too small.
But pcb properties (e.g. tented via's ) seem to be the majority of the problem causes.
Not the stencil thickness.
Note: Suppliers of stencils do have a tolerance in the produced stencil thickness.
When the stencil is designed, one should consider the tolerance of the stencil thickness, especially for the smaller apertures.
Jowan Iven
Process Engineer
Neways
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Torsten Hagge
Sent: Thursday, October 15, 2009 10:26 AM
To: [log in to unmask]
Subject: AW: [TN] Stencil Thickness Verification
Hello,
we qualify our stencils (and the printing process) by high & volume measurement using a CyberOptics SE200 for each project.
Best Regards,
Torsten
Dipl.Ing.(FH)Torsten Hagge
tech. projectmanager
Kristronics GmbH
Gewerbegrund 5 - 9
24955 Harrislee
Tel.: +49 461 7741 624
Fax: +49 461 7741 642
[log in to unmask]
www.kristronics.de
Gerichtsstand Flensburg, Handelsregister: HRB 1433 FL
Geschäftsführer Dipl.-Ing. oec. Thormod Ohm
Ust-Id-Nr. DE 811182059
Bankverbindung: Deutsche Bank AG Flensburg, Konto-Nr. 4216610, BLZ 21570011
IBAN: DE32 2157 0011 0421 6610 00, BIC: DEUT DE HH 215
-----Ursprüngliche Nachricht-----
Von: TechNet [mailto:[log in to unmask]] Im Auftrag von Leland Woodall
Gesendet: Mittwoch, 14. Oktober 2009 19:22
An: [log in to unmask]
Betreff: [TN] Stencil Thickness Verification
TechNetters,
Does anyone in the industry verify their framed stencils for thickness
upon receipt at their facility? If so, could someone please share what
kind of tool they use?
I'm having difficulty finding such an animal that will accurately
distinguish between 5 and 6 mils.
Thanks for your help,
Leland
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