Homebrew PCBs

Rob,
I also use a E260 to directly print to the PCB.
I solder a small wire to the blank PCB and connect it to ground. I use a 
card stock carrier. As the PCB gets bigger (more square inches), I 
sometimes connect the PCB to an adjustable 0 to 500 volt power supply 
through a 3 to 5 meg resistor. I found the best voltage to be about +350 
volts.
Cleaning the PCB with acetone is a must.
Search the archives for the words "acetone fix toner" for my method of 
"fixing" the toner to the PCB without ANY heat.
Jim KI6MZ

On 6/6/2011 11:40 AM, Rob Frohne wrote:
> Hi All,
>
> We are using a modified E260, but are having difficulty getting the
> toner to consistently stick to the board, especially on larger boards
> with large ground planes.  We have found some improvement by adding
> another larger piece of board in electrical contact with the one to
> print, but results are still inconsistent.  Do you have any hints for me
> and my students?
>
> Thanks,
>
> Rob
>