Yes. I used them for a couple of years and even installed them in my Roland plotter to plot circuit boards. They did an excellent job (if you were lucky) and if the correct ink is used it is VERY resistant to etch. This was my only method of making boards during that time. But then I got a laser printer and abandoned the plotter and ink method in favor of toner transfer. I would never go back and quite frankly I'm not sure why anyone is considering going back to markers and technical pens when toner transfer works so well.
The technical pens and plotter were simply a pain in the butt. I was using the smallest ones available (0.3mm I believe) and they had to be taken apart and cleaned after every use. There was an extremely fine wire inside used as an ink release valve and it was sure to get bent when dis-assembled. The pens required special cleaner to dissolve the ink. The pens frequently skipped when used on copper (rather than paper as intended).
For what it's worth Eagle can still generate plot files for the Roland plotters but the plotters require a parallel port (rare these days) and drivers for same AFAIK do not exist for the plotters any more.
Forget the markers etc. and use toner transfer, it's cheap and easy.
Posted by: "Dave Sage" <davesage12@rogers.com>
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