Hi,
I am using Pulsar paper, green film, laminator and boards... Results
are perfect with 6mils traces and 6mils spacing. It is fast and easy, I just
followed their instructions... Nothing fancy or hard !
Best Regards,
Alexandre Guimaraes
-----Mensagem original-----
De:
Homebrew_PCBs@yahoogroups.com [mailto:
Homebrew_PCBs@yahoogroups.com] Em
nome de Chuck Kelsey
Enviada em: segunda-feira, 11 de fevereiro de 2008 20:51
Para:
Homebrew_PCBs@yahoogroups.comAssunto: Re: [Homebrew_PCBs] Trouble producting transfers
Thanks guys for all the tips.
Is anyone doing toner transfers and consistently getting perfect results?
Maybe my expectations are too high and I'll have to live with some "hand
drawn" missing traces.
My last attempt was a 4x6" board that actually had 6 circuit boards on it
that I'll cut apart. Out of the 6, there was only
1 with no flaws and 2 with a minor flaw.
Chuck
WB2EDV
----- Original Message -----
From: "Ben Buxton" <bb@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Sunday, February 10, 2008 11:43 PM
Subject: Re: [Homebrew_PCBs] Trouble producting transfers
>
> I had this problem initially where some toner would still lift off the
> cpper with the paper.
>
> The solution I have found is novel, but works surprisingly well - in
> fact I can now reliably transfer and etch to smaller than SOIC traces.
>
> All I do is let the board + paper soak for a few minutes after the
> initial 10 or so laminator passes. Then, whilst the paper is still wet,
> I run it again through the laminator. It hisses and steams, but after a
> few passes the paper dries and the toner really sticks to the copper.
>
> When the peper and board are wet, the paper holds to the board until I
> manually pull it off. And the toner sticks firm enough that I can run a
> fingernail across without lifting the toner.
>
> Note that if you want to do this, for safety you MUST make sure that the
> electricals in the laminator are far enough from where you pass the wet
> board through - I figure if you're making PCBs, you're also able to
> safely open up your laminator to check this out.
> It may take careful paper placement to prevent the laminator from
> tearing the wet paper+toner away from the board.
>
> Also, the way to verify that the copper is clean is that when you wet
> the board, water actually stays wet across the whole surface. If the water
> retreats from areas of copper and pools up, your board is dirty. When it's
> clean, air-dry it, don't wipe it down. I use Jif for the final clean -
> rubbed across the board, the abrasive action cleans the copper, and the
> built in soaps remove the oils.
>
> FYI, my setup uses an HP laserjet4 (found on the street), a k-mart
> laminator, and IJ-84 matte paper. A home made bubble tank (using an
> aquarium pump + air stone) etches a 5x7mm board in under 10 minutes.
>
> BB
>
> Chuck Kelsey <wb2edv@...> uttered the following thing:
>> I picked up a new GBC 9" personal desktop laminator and tried some boards
>> with no luck.
>>
>> I'm using a 4" x 6" board with 1 oz. copper and it has a thickness of
>> 0.032". I clean it with a brillo pad and rinse thoroughly while wiping
>> with
>> a wet paper towel, then dry with a paper towel.
>>
>> The laser printer is a Lexmark 4039 10plus set at the darkest setting.
>> Using
>> the Pulsar toner transfer paper.
>>
>> The first attempt I ran the board (with the paper on the bottom) for 8
>> passes in different directions. The laminator ready light had been on for
>> 15-20 minutes before I began. I also pre-heated the board with a hair
>> dryer.
>>
>> I dropped the board with the paper into a container of water and let it
>> rest
>> until the paper floated off on its own. Right away I could see pieces of
>> black toner floating in the water as I lifted the paper out.
>>
>> My second attempt was done the same way, except I ran the board through
>> 16
>> times. Same problem - toner pieces floating around in the water.
>>
>> This is very discouraging and I'm at a loss. Anyone have any suggestions?
>>
>> Chuck
>> WB2EDV
>>
>
> --
> Ben Buxton - Random Network Person
>
>
>
> Be sure to visit the group home and check for new Links, Files, and
> Photos:
> http://groups.yahoo.com/group/Homebrew_PCBs
> Yahoo! Groups Links
>
>
>
>
Be sure to visit the group home and check for new Links, Files, and Photos:
http://groups.yahoo.com/group/Homebrew_PCBs
Yahoo! Groups Links