Homebrew PCBs

to modify laminator is a thing must been done.

laminator seems setting at temperature just
above 100C. Far from good result for TT.
Fuser in laser printer, has suitable temperature.




----- Original Message -----
From: "Robert Hedan" <robert.hedan@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Sunday, May 29, 2005 3:41 AM
Subject: RE : RE : [Homebrew_PCBs] New paper for TT! Reynolds Parchment
Paper


Well, I got excellent results printing onto PlayBoy magazines.  The lines
were extremely crisp.  The problem occurred during passing through the
laminator, the toner would barely stick if at all.  The silicone papers did
give partial results, but nothing to jump up and down about.

I've tried the $30 el-cheapo WalMart laminator, save your money.  It doesn't
even make a dent, doesn't seem hot enough.  The GBC 300 gave me some
results, but showed signs of serious stress.  The PCB would stick and had to
be helped along, with groaning and cracking noises; not reassuring.

One tutorial on the group mentionned passing the PCB 8 times through the
laminator, that's not really acceptable for me.  I'd like to do some minor
volume and would like to cut that down.  I am wondering if preheating the
prepped PCBs in the small toaster ovens would shorten the process somewhat.
Anyone try that yet?

I'm seriously considering finding a scrap copier and using the hot drum in
there for laminating.  Ideally, a laser printer that I could open and try
the straight through direct printing would be ideal, but I scavenged my
LaserJet II a few months ago for the motors.  WAAAAAH!!!!  I killed the
roller, and I didn't take notes what went where, and broke some critical
flex cables by accident.  d'uh...

I've read through the files on the group and considering options at this
point.  I'll try printing on the outer side of the silicone paper and see
what that gives.

Can you tell me more about this high temp silicone you talk about?  How do
we use that?

I'm not going to be fabricating PCBs on a large scale, but I do want to be
able to handle something in the order of under 100 sheets of 8 1/2" x 11"
single-sided.  I'm seriously starting to consider investing in a Saber or
similar machine:
http://www.online-inc.com/Product%20Pages/Sabre%20CloseUp.htm


Robert
:)



-----Message d'origine-----
De : Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] De
la part de Stefan Trethan
Envoy\ufffd : mai 29 2005 02:23
\ufffd : Homebrew_PCBs@yahoogroups.com
Objet : Re: RE : [Homebrew_PCBs] New paper for TT! Reynolds Parchment Paper


Robert, you are seeing much the same thing i saw back then when trying
baking paper.
The coating is just too slippery to hold the toner. The back allows
printing because it is not coated.

It seems, baking paper works only with certain printers and or for certain
people.

If i were you, i'd try silicone coating with high-temp silicone. The
difference is the surface is kind of sticky.


ST



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








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