Homebrew PCBs

Hi Ray 

I have a 4 lined up to try. Can you tell me what settings you
used 300-600 dpi? density/blackness setting of toner etc?

I need to make some 3/4 inch square pcb's and I was quoted
over $200 to make 10 plus 30 days delivery. So a pack of paper
and a hour or two of my time is more than paid for if I can 
get it to work.

Dave

 
> 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. 
> 
> The laserjet came with a lexmark toner cartridge that looks like it 
> has never been refiled and I completed about 30 sq.in. S/S pcb with 
> maybe 100 linier inches of .15 traces and not a single pit or pin 
> hole. Considering my past experiance with pin holes in TT I speculate 
> that the toner is the culprit, and the toner in the lexmark cartridge 
> for an unknown reason is not as apt to produce the pin holes.
> 
> 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.
> 
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> 
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> and Photos:
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> 
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