Homebrew PCBs

No treatment was required for me, I used Ammonium Persuphate heated to 
about 80C with no trouble with undercutting or track breaks on areas 
where the ink was thickly placed (in my plotting experience the ink 
didn't run very well thru the pen over time of the plot)

  Trev

lcdpublishing wrote:

> I will be (within a few weeks) testing out plotting / etching with
> Staedtler pens. I made up a pen holder for my CNC machine and am
> working out a few other details for direct import of the Gerber data.
> Once complete, I will be trying this process out first hand.
>
> The Super Fine pens seem to plot about a .015" wide trace which
> severly restricts layouts (relative to what I have been doing so far).
>
> I went for the Staedtler pens based on SO MANY recomendations here
> from SO MANY people as to how well it holds up to etching. Aside from
> putting the ink on the copper, has anyone had to do any other special
> treatments (heating, drying, etc.) before performing the etching
> process?
>
> Thanks
>
> Chris
>
>  



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