OK, I've got the vintage Singer plugged in, a few bobbins spun up, and I tested (and attempted to remember how to sew) by repairing some work clothes. Re-stitched a torn butt seam, fixed holes in the pockets (where I carry a pen and pocket knife), and even (re)hemmed one pair. Machine works beautifully!

So I'm about to start making some bags from silnylon remnants I picked up, and I'm using the bag that came with my WBBB as an example to follow. The question I have: he does this really tight stitching along the edge of the material, it appears to "finish" the edge...it almost looks like a zig-zag that's half off the material. (I hope that makes sense)

What is this method of finishing the edge of the material called, and any suggestions on how to do it?

My first project is going to be to make a slightly larger bag for my WBBB, as I want to be able to stuff the hammock into the bag with my (yet to be made) pillow. And it's an excuse to make a bag.

TIA