Homebrew PCBs

On Wed, 06 Sep 2006 19:58:07 +0200, Ray Dinwiddie  
<crdinwiddie@...> wrote:

> Hi All: Just picked up a used Laserjet 4 for use in TT. Testing and
> evaluating produced some tips I share. To remove TT from a spoiled
> board we all know that acetone makes a mess by diluting the old toner
> and staining the board requiring a lot of scrubing to restore a bright
> copper surface. I found that gasoline and a dead toothbrush works much
> better, the old toner is not diluted but dislodged from the board and
> with a little soap and water you are back to a clean board.

It works for me to scrape the toner off mechanically with a hard edge like  
another board or a steel scraper.
Remember that gasoline is more dangerous than acetone health-wise and  
should be used with the appropriate ventilation only.


> Removing Epson glossy paper from the PCB is easy with denatured
> alcohol but it leaves a little residue at the edges of the traces and
> in the pad center holes. This residue in easily removed by lightly
> scrubbing with a dead toothbrush and denatured alcohol.

Water and foam rubber works also very well. The foam rubber is good at  
removing the paper residue.

ST