Hi Michael,

Thanks for writing back.

I didn't really want to post the design I was working on...so I tried to create a design that was similar. In doing so I identified and fixed the bulk of my issues.

So, in hopes they help someone else, a few things I learned about the way I'm using the app:

1) If you're drawing a curve freehand, the points of the line are /guides/. I was assuming that the snap would link lines, but it doesn't...it links points. That meant that the lines didn't, in fact, intersect...which meant I was trying to make a network on a non-closed polygon.

2) Similarly, when trying to do an offset, if the calculation lasts forever, slice it into smaller (and more importantly simpler) sections. That lead to interesting things like the time I sliced an irregular shape into four sections, and then did an offset. One of them popped up, the other four popped down. No biggie, I just set the one to 'flip' the offset, and all was well.

3) Out of the box, the app doesn't enforce units. When sent to other folks, this will appear as mm, so something I meant to be 30cm was actually 3cm. After settings the units, it's now in cm, so should measure the right size.

There were other things, but those were the biggest problems in my design by a long shot.

Thanks,

-Ken