Homebrew PCBs

----- Original Message ----- 
From: "DJ Delorie" <dj@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Wednesday, April 11, 2007 4:26 AM
Subject: Re: [Homebrew_PCBs] Newbie questions


>
> Assuming you want to use the laser printer (and not an inkjet or other
> print/etch technologies), there seem to be two basic techniques.
>
> First, toner transfer.  Easiest way to get started (if you don't mind
> spending a little for equipment) is to get Pulsar's starter kit, which
> includes a laminator, the water-release paper, sealer foil, some PCBs,
> and maybe even the solvent (requires hazmat shipping).
>
> Second is photomask.  You buy pre-sensitized boards, print to a
> transparency, and use UV light (or sunlight) to expose the mask.
> You'll need some chemicals to develop the mask, and a mini-darkroom.

You don't need a darkroom, standard positive resist isn't affected by 
daylight or artificial lighting during the process provided that it is 
developed soon after exposure.

Leon
--
Leon Heller
Amateur radio call-sign G1HSM
Yaesu FT-817ND and FT-857D transceivers
Suzuki SV1000S motorcycle
leon355@...
http://www.geocities.com/leon_heller