Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

----- Original Message -----
From: "Mr Crazy" <crazymr420@...>
To: <homebrew_pcbs@yahoogroups.com>
Sent: Thursday, August 16, 2007 7:15 PM
Subject: [Homebrew_PCBs] Riston Plate Master Dry Film


> Hi All,
>
> I am new around here and new to the filed of etching. Though I have tried
> things with toner transfer and it has worked but I couldn't get rid of pin
> holes that appear because toner not getting fully transfered. I have tried
> Toner Transfer thro' Acetate/ Laser Transperancies.
>
> Now, I want to try this with Dupont Riston Plate Master Dry Film. Has
> anybody used this dry film for making PCB at home?
>
> Are all dry films require same processing? Any experiences, suggestions.
>
> I have gone thro' Dupont datasheet for the film, but since I am not very
> techie, I didn't understood some stuff, so if anybody has tried,
> experience will be of great help.
> (http://www2.dupont.com/Imaging_Materials/en_US/assets/downloads/datasheets/pm200.pdf)
>
> I have found good article about "How to laminate dry film photoresist".
> (http://www.megauk.com/datasheets/5180_Data_Sheet_Dry_Film_Photoresist_(How_to_Laminate).pdf)
>
> But not sure if it will be same for Dupont Riston. What about exposure,
> that will also be same as any other dry film. How much power UV light
> source is required?


Have you tried using pre-coated positive resist boards? If not, get your
process working properly with those first.

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