I have just made an almost perfect double sided PCB using ink jet matte
photopaper and an iron. Yes... you have to iron very completely. Any way I
have great results with .040 trackwidth and .020 spacing. All in all it cost
me around $20 to produce a 5x5 double sided board. If you need details just
let me know.

Steven
----- Original Message -----
From: "Andrew T Kelley" <k_andrew@JUNO.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Saturday, March 11, 2000 1:31 PM
Subject: Re: [OT] need PCB boards and developer [OT]


| On Sat, 11 Mar 2000 18:16:21 -0000 Alan Pearce <A.B.Pearce@RL.AC.UK>
| writes:
| > >Try http://www.digikey.com and they have 'toner transfer system'
| > paper. (
| > >I have never used it but it sounds good!  It's 5.89 or so for 5
| > sheets. )
| >
| > >You take a sheet, print on it with a laser printer or copier then
| > you
| > >either iron it on or wet it.. i'm not sure which.
| >
| > I believe it needs heat to transfer it to the PCB laminate.
| > Electronics
| > Australia, an electronics magazine, reviewed such stuff about 5
| > years ago, and
| > claimed that it did what it was supposed to. It is apparently
| > possible to do it
| > with normal paper.
|
| Ahhh but did ANYONE Ever TRY IT?
|
| > The process occurs because printer toner contains plastic which gets
| > melted in
| > the heat rollers of the printer which causes the now slightly molten
| > plastic to
| > be absorbed by the paper. The toner transfer paper is designed to
| > release the
| > toner when reheated so that it sticks to the laminate instead.
| >
| > The impression I got was that it needs to be pretty hot to release
| > the toner
| > from the paper, but a household iron as used on clothes may be hot
| > enough.
|
| Andrew
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