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Subject: Re: [Homebrew_PCBs] vacuum frame for UV exposure

From: Harvey White <madyn@...>
Date: 2012-02-21

On Tue, 21 Feb 2012 11:27:21 +0000, you wrote:

>Does a vacuum frame really help. I get excellent results (down to 8/8)
>without one, just putting the board and transparency on the glass with a
>book on top.

Main problem is that the glass reduces UV, and the plastic doesn't. I
went for a shorter exposure and more UV. I'm also exposing from the
top, not bottom.

Harvey

>
>Leon