Homebrew PCBs

No mistakes.  Just one question.

----- Original Message -----
From: Rick Sparber <rgsparber@...>
To: Homebrew PCBs <Homebrew_PCBs@yahoogroups.com>
Sent: Thu, 15 Aug 2013 10:07:28 -0400 (EDT)
Subject: RE: [Homebrew_PCBs] Re: Easy Fast Laser Print DIY Circuit Boards - Dave's toner-transfer freezing technique

 Once I got into my shop I realized that the wax paper would stop any acetone

vapor or even liquid. So I went with plan B and clamped the artwork with a

hose clamp. Then I applied heat using an industrial heat gun. I used a scrap

of paper with toner on it to tell me when the metal was hot enough. Then I

put the copper pipe in the freezer for 30 minutes. The clamping force was

not uniform. Most of the toner did not stick. In a few places it squished

out and left fragments. Where the toner did stick, it is on securely. I

really do not want to build a custom machine just to mimic what a laminator

does so well. Suggestions?


One rather distasteful idea is to put the artwork on a strip of copper, etch

it, and then form it into a cylinder. Solder could be used to secure it.

Even with a precision beveled joint, it would be obvious.


Rick


-----Original Message-----

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]

On Behalf Of Rick Sparber

Sent: Wednesday, August 14, 2013 4:09 PM

To: Homebrew_PCBs@yahoogroups.com

Subject: RE: [Homebrew_PCBs] Re: Easy Fast Laser Print DIY Circuit Boards -

Dave's toner-transfer freezing technique


Mark,


Excellent idea! I'm on it.


Thanks,


Rick


-----Original Message-----

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]

On Behalf Of Mark Lerman

Sent: Wednesday, August 14, 2013 2:13 PM

To: Homebrew_PCBs@yahoogroups.com

Subject: RE: [Homebrew_PCBs] Re: Easy Fast Laser Print DIY Circuit Boards -

Dave's toner-transfer freezing technique


Rick,


You might want to try using an acetone vapor chamber. Wrap the toner around

the pipe, perhaps taping it to the pipe, then let it sit in acetone vapor

for a few minutes. Maybe from there into the freezer for a half hour. Just a

thought.


Mark

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