It takes intents effort to do it right. Dependent on size a dry film cap
followed by a LPI cover has been one method to achieve satisfactory results
in a high-rel environment.
Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Cal Driscoll
Sent: Friday, August 27, 2004 10:15 AM
To: [log in to unmask]
Subject: [TN] tented Via


Hello All-

I am not a board fab person but would like to understand why some LPI
masking processes can not tent vias (non filled).

We have a board house that can tent vias with no issues. When we went to
another board house the are unable to tent vias. Both shops are huge and
have international locations. I would think the technology would be there to
do this.

thanks in advance,
Cal
www.ctdi.com

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
-----------------------------------------------------

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------