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

----- Original Message -----
From: "lcdpublishing" <lcdpublishing@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Tuesday, August 04, 2009 11:54 PM
Subject: [Homebrew_PCBs] Need better reliability than I am getting with
toner transfer - what's next?


> Hey guys,
>
> I have had a good run with toner transfer but the more I get into these
> small packages, the more failures I am getting. The surface mount chips
> (100 pin qfp) are just too demanding.
>
> I have tried using that dry-film etch resist that you buy on a roll, apply
> it to the board with a laminator and have had mixed results.
>
> Today it took me all of 7 hours to make a small board that is only 60 MM X
> 60 MM.
>
> I am wondering what it a more reliable method to try next.

I use photo-etch with pre-coated boards and don't have any problems with 0.5
mm spacing QFP parts.

Leon