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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> Be sure to visit the group home and check for new Links, Files,
> and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBs
>
> If Files or Photos are running short of space, post them here:
> http://groups.yahoo.com/group/Homebrew_PCBs_Archives/
> Yahoo! Groups Links
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