Homebrew PCBs

----- Original Message ----- 
From: "Stefan Trethan" <stefan_trethan@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Friday, September 15, 2006 1:29 PM
Subject: Re: [Homebrew_PCBs] Re: UV exposure boxes


> On Fri, 15 Sep 2006 13:51:20 +0200, Leon Heller
> <leon.heller@...> wrote:
>
>>
>> I think that is the case. That's why ordinary glass is OK for UV exposure
>> boxes, it doesn't absorb the longer wavelength UV. I used Perspex at
>> first,
>> thinking it mattered.
>> Leon
>
>
> isn't perspex much less transparent to uv than window glass?
> I'm not sure at which wavelengths though.

It worked about the same for PCBs, I found.

Leon