Homebrew PCBs

----- Original Message ----- 
From: "Michel Baguet" <bagmik@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Wednesday, October 29, 2008 8:30 AM
Subject: Re: [Homebrew_PCBs] Re: MG Negative Dry Film Resist


> Hi all,
>
> has anyone already use sodium metasilicate for development ?
> I've read that you can leave your PCB in it without any risk of 
> over-development and it can last for years.

I have used it, and it has a lot more latitude than NaOH. It's more 
expensive, though, and not as easy to find. I prefer NaOH.

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