On 08/05/2011 00:01, James English wrote:
> Hello, I'm new to this group, though not new to electronics. Does anyone out there have experience with exposing a photosensitive board through a negative to sunlight? A man at Injectorall told me that about six minutes at noon on a bright sunny day but that doesn't seem to work.
It depends where you are, to some extent. I think it takes a lot longer
than that.
Make yourself a UV exposure unit like this one of mine:
http://www.leonheller.com/Photos/UV%20unit.jpgIt'll work a lot better.
Leon
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Leon Heller
G1HSM