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Subject: Re: [Homebrew_PCBs] UV exposure box

From: Leon Heller <leon355@...>
Date: 2010-02-14

On 14/02/2010 14:49, Barry Demers wrote:
> Since you can measure your exposure with accuracy, reduce your distance and
> increase your time. For example, 6" distance should equate to 6 minutes.
> (half the distance, 1/4 the time). One thing that I haven't dialed in yet.
> The bulbs have a lifetime, they wear out. Longer they are on for each job,
> the fewer the jobs before replacement.

Don't forget that you lose collimation with shorter distances.

Leon
--
Leon Heller
G1HSM