very cool. i tested a couple of local cities. they come out great when you download. only negative is that if i download two cities next to each other, i can’t easily marry them because the scale isn’t consistent. but the linework is great.
Then (while in the standard view mode) click “share” on the right side. You can export it as SVG. Then it’s just a matter [in Inkscape, anyway] of using “select same…” to isolate what parts of the map you want.
I was able to whip this up in just a couple minutes.
Those are all paths, I could score it or convert it to outlines and preserve the thicknesses with a proper engrave.
Power move: color code the various thicknesses and score everything but at varying degrees of incorrect focus to get thicker lines. Should be faster than engraving by quite a bit while still preserving some of the line thickness data.