Homebrew PCBs

----- Original Message ----- 
From: "agscal -AGSCalabrese" <agscal@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, February 28, 2008 4:31 PM
Subject: Re: [Homebrew_PCBs] UV LED + photoresist experiments


>I did not know that.
> Do you have a graph of wavelength vs transmssion % that I could be
> directed to ?  Also, If  the glass happens to have unsuspected
> coatings, then it is not ordinary glass.  ... May still be a problem.

No, but it is the reason why most UV exposure units have glass platens. I 
just use ordinary window glass in my exposure unit, and don't have any 
problems.

Leon
--
Leon Heller
Amateur radio call-sign  G1HSM
Yaesu FT-817ND transceiver
Suzuki SV1000S motorcycle
leon355@...
http://www.geocities.com/leon_heller