From: Joerg Hansmann (info_at_jhansmann.de)
Date: 2002-01-09 00:18:18
Hi Andreas,
----- Original Message -----
From: Andreas Robinson <sleeper75se_at_yahoo.se>
To: <buildcheapeeg_at_yahoogroups.com>
Sent: Tuesday, January 08, 2002 9:08 PM
Subject: [buildcheapeeg] New input stage
...
> 2.5-layer PCB's is my "normal" way of building boards.
> :-) I've developed a simple technique for aligning the
> two layers when I do the UV-light transfer, so it is
> almost as easy as making single sided boards.
It seems to me that you use an advanced process for
exposure and etching compared to what I am using.
Can you explain, what materials and procedures you use
for the UV-light transfer and etching ?
What minimal copper/clearance can you produce reliably ?
Regards,
Joerg
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