Homebrew PCBs

----- Original Message ----- 
From: "agscal -AGSCalabrese" <agscal@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, February 28, 2008 5:54 AM
Subject: Re: [Homebrew_PCBs] UV LED + photoresist experiments


> You might want to find a way to lose the glass layer.
> It may be sucking UV energy or converting it.
> How about vacuum suction or really thin glass ( 1mm ) ?
>
> Glass blocks UV

It depends on the wavelength, ordinary glass is quite transparent to the UV 
used for PCB exposure.

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