Sketch: fill test pattern generator
Hatch fills or pixel art plotting requires a rather precise estimate of your particular pen/paper combo’s stroke width. For example, this test pixel art plot would benefit from a slightly thinner pitch to avoid the visible overlap between neighbouring lines: There is no way around experience to find the optimal pitch. I’ve created the fill_test sketch to create custom charts with test patterns precisely tuned to the pen of interest. There is indeed no point to testing a rotring isograph ....