I’m creating a stencil as a vector illustration (in Vectornator), and I’ve been struggling to create parallel curves for the outline. Is there a common the technique for this, other than just obsessively tweaking the control points so that the curves seem as parallel as possible? I’m attaching an image with what I’ve got so far. Thanks!
I opened the online manual of Vectornator. It can convert strokes to outlines which can be combined to other paths. Vectornator use many same operation names as Illustrator. An example:
A single open curve with quite wide stroke
The stroke is outlined (I do not know if you must ungroup the result and remove the original curve). It's now a closed path which has a narrow stroke, no fill
Another path is drawn
Both paths are united to one with pathfinder - It's the boolean union.