Homebrew PCBs

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.
Gus

>
> On Feb 28, 2008, at 2:09 AM, Leon wrote:
>
> ----- 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
>
>


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