Homebrew PCBs

Hi
It's prob just the clay from the paper.
I just dump the board into the acid and it removes it
when ecthing.


 
73's Howard G7LQY
GQRP: 12549
Loc: IO83UO
LARGE FILES TO: hjpayneg7@...



________________________________
 From: Donald H Locker <dhlocker@...>
To: Homebrew PCBs <Homebrew_PCBs@yahoogroups.com> 
Sent: Friday, 2 August 2013, 12:55
Subject: Re: [Homebrew_PCBs] Glossy coating removal
 


  
What is the paper? Do you know what the residue is?

Donald.
--
*Plain Text* email -- it's an accessibility issue
()  no proprietary attachments; no html mail
/\  ascii ribbon campaign - <www.asciiribbon.org>

----- Original Message -----
> From: "Kerry Koppert" <kkoppert@...>
> To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> Sent: Friday, August 2, 2013 5:42:06 AM
> Subject: [Homebrew_PCBs] Glossy coating removal
> 
> I've finally found a paper that works with the laser transfer method.
> Only problem, it leaves a fine residue behind on an between the pads of
> smaller smd i.e, ssop pic processors. Is anyone aware of a chemical
> agent which will loosen this coating without lifting the laser transfer?
> I'm trying dilute caustic soda which looks promising.
> 

 

[Non-text portions of this message have been removed]