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Subject: Re: vacuum hold-down for exposure box

From: "javaguy11111" <javaguy11111@...>
Date: 2009-03-23

--- In Homebrew_PCBs@yahoogroups.com, Piers Goodhew <piers@...> wrote:
>
>
> Then (for the less frequent exposer) why not stick the whole sandwich
> into one of those vacuum "space bags" you use to shrink your winter
> clothes away with.
>

Along that line of thought, one thing I tried about a year or so ago was heat shrink plastic like you find wrapping music or video CD's.

I bought some from ULine for relatively cheap and more than I could ever use. I heat sealed the board and mask inside of the pouch and ran the whole thing through my laminator. to shrink the plastic wrap.

The biggest problem I had was that the corners would not shrink evenly and was somewhat wrinkled. However in the center the mask was held quite tightly to the board. I have not done anymore testing since then, but that would be an option if someone wanted to try a vacuum-less method.