Here is hoping there is someone here familiar with the HP7475A 6 pen plotter. I have one that runs the demo self test plot with no errors. When plotting a 18k file (the drill in KeyCad) it inserts two extraneous lines at the same place every time in the plot(one on the c in kcf drawing title and one on the drill body). I know KeyCad uses HP7470 drivers but they work when plotting the drill.kcf on three other 7475A's. TIA.
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