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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