30 Jul
2006
30 Jul
'06
12:28 p.m.
Chris M <chrism3667 at yahoo.com> wrote:
by any chance does anyone use this method, and would
be willing to small *even* number of sheets? The one
place I know of that sells it has a $50 minimum order
(Halted). Or maybe someone knows of a place with fewer restrictions.
Toner transfer photoresist or even the rub on Dataks or just a etch-resist pen
are all methods that I've used. They're all passable for single-sided
PCB's (but actually toner transfer is the least reliable in my
experience). They all really really suck for double-sided PCB's, especially
if you expect any luxury like plated through holes.
For me, far higher yield for double-sided PCB's
comes from ordering boards over the
internet. Generally you have to use (gasp!) a modern PC with
Windows software, but other than that the experience is wonderful.
I use http://www.expresspcb.com/
Keep in mind that I have nothing intrinsically against messy
chemicals etc. (I like darkroom stuff too). But ordering boards
from a professional etching house is so easy these
days, and
their yield is so high (never once on many dozens of boards has
there been a flaw).
If you really want to do the toner transfer stuff despite all that
I said, you can get 10 sheets of 8.5x11 from Circuit Specialists
( http://webtronics.stores.yahoo.net ) for $14.95, part number
PCB-TTP.
Tim.