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IPA and acetone

IPA and acetone

2004-07-30 by mikezcnc

I found an interesting discussion on cleaning with IPA and acetone:

http://www.eng-tips.com/gviewthread.cfm/pid/31/qid/85540

The last post says that: "IPA will still leave a residue" and that is
what I had in mind. How much of that film affects out TT methods is
another story but the fact is that it leaves film ie 'smears'.
Like I said, I clean only with the abrasive pad (was it 3M?) and
detergent.

Is there something stronger than acetone to remove laminated toner?
This is because the laminator embeds the toner like an enamel.

Mike

Re: [Homebrew_PCBs] IPA and acetone

2004-07-30 by Leon Heller

----- Original Message -----
From: "mikezcnc" <eemikez@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Friday, July 30, 2004 4:55 PM
Subject: [Homebrew_PCBs] IPA and acetone


> I found an interesting discussion on cleaning with IPA and acetone:
>
> http://www.eng-tips.com/gviewthread.cfm/pid/31/qid/85540
>
> The last post says that: "IPA will still leave a residue" and that is
> what I had in mind. How much of that film affects out TT methods is
> another story but the fact is that it leaves film ie 'smears'.
> Like I said, I clean only with the abrasive pad (was it 3M?) and
> detergent.
>
> Is there something stronger than acetone to remove laminated toner?
> This is because the laminator embeds the toner like an enamel.

Cellulose thinners (xylene) works very well, whenever I use TT. It's less
volatile, which helps.

Leon

Re: [Homebrew_PCBs] IPA and acetone

2004-07-30 by Stefan Trethan

On Fri, 30 Jul 2004 15:55:51 -0000, mikezcnc <eemikez@...> wrote:

> I found an interesting discussion on cleaning with IPA and acetone:
>
> http://www.eng-tips.com/gviewthread.cfm/pid/31/qid/85540
>
> The last post says that: "IPA will still leave a residue" and that is
> what I had in mind. How much of that film affects out TT methods is
> another story but the fact is that it leaves film ie 'smears'.
> Like I said, I clean only with the abrasive pad (was it 3M?) and
> detergent.
>
> Is there something stronger than acetone to remove laminated toner?
> This is because the laminator embeds the toner like an enamel.
>
> Mike
>
>

As far as i know there is nothing to remove the toner completely from
epoxy.
The acetone makes things worse as it solves the epoxy.
only solution i know: don't get the toner where it doesn't belong in first
place.
(e.g. never misalign component legend).

As for the "IPA leaves residue",
it sounds right, but strangely i get holes in the transfer with acetone
while it is perfect with IPA.
I must try again with 100% same procedure.

ST