[rescue] HP7550a plotter

[Larry Snyder]

"Geoffrey S. Mendelson" <gsm at mendelson.com> wrote:
> I know, it's not much. but I just picked up an HP 7550a plotter. 
> It was filthy, but expect for no pens, it was complete and works.
> 
> 
> I have the following questions and was hoping for some insights from
> the group.
> 
> 1. Assuming I can't get pens for it (here in Israel), what can I use?
>    I made a pen out of a BIC pen and a pen out of a pencil. I cut them to
>    size and wrapped them with electrical tape. They worked, but left
>    nothing but faint scratches on the paper. :-(

Try a nylon-tip rather than a ballpoint.  Should work wonders.
-ls-