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

previous by date index next by date
previous in topic topic list next in topic

Subject: RE: [Homebrew_PCBs] Toner Transfer questions...

From: "Pedro Perez de Ayala Rull" <payala@...>
Date: 2003-12-04

Hi all, I know this answer comes a little bit late, but I haven't seen
anyone mention it and I have been getting very good results with it. I am
using Time magazine paper with a laminator. It works PERFECT, I can do
traces from 3.3 mils wide with 5 mils clearance for small boards, I havent
tried using such tigh specs for big boards(for which I usually use 8mils
traces and 8 mils clearance). I have tried many papers and this one is the
best by far and pretty easy to get. Just one thing is not to feed it
directly to the printer since it will most probably get stuck, instead i
hold it on a normal paper with some tape and insert the whole stuff to the
printer.
-----Mensaje original-----
De: Anthony [mailto:toftat@...]
Enviado el: viernes, 28 de noviembre de 2003 17:51
Para: Homebrew_PCBs@yahoogroups.com
Asunto: [Homebrew_PCBs] Toner Transfer questions...


Being new to this, I am trying to make a toner transfer board. I have
made one very simple postage stamp sized board and it worked OK. I am
now trying to do a slightly more complex board (in a crawl-walk-run
kinda thing) and am having a lot less luck. I have tried to transfer
a couple of times and decided it wouldn't work right.

I am printing on my regular 20lb 84 brightness Georgia
Pacific "Copier Paper" $3 from walmart, and it leaves a lot
of "hairs" on the toner. If I am aggressive enough to get these off,
I also pull the toner off the board.

How hard should I try to get these off? My first thought was they too
will act as resist and I need to get them all off, is this true?
Becaused my second thought was that they'll absorb the etchant (FeCl)
and etch anyway albeit a bit slower.

Is there any better paper out there that won't cost a fortune, I have
seen the press'n'peel stuff and at $2 a sheet it's a bit costly if
it's one shot. I have a small budget but I can afford to use a bit of
time on the process.

As an off topic question (and please if you reply to this reply
personally) does anyone have any experience using the Zilog Z80 as a
micro controller?


Yahoo! Groups Sponsor
ADVERTISEMENT




Be sure to visit the group home and check for new Bookmarks and files:
http://groups.yahoo.com/group/Homebrew_PCBs

To unsubscribe from this group, send an email to:
Homebrew_PCBs-unsubscribe@yahoogroups.com



Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.


[Non-text portions of this message have been removed]