This complex looking stitch is the Net Passing Stitch.
Although complex looking, Net Passing Stitch is just made up of long Straight Stitches. The complex part is ensuring even spacing! I used a ruler and a water-soluble marker.
I spaced my start/stop stitch marks 1/4" apart:
across the whole grid:
According to Embroidery Stitches, this stitch is also known as the Honeycomb Filling Stitch. If you are a regular reader of this blog, you may remember that I previously demonstrated "Honeycomb Filling Stitch". It is a totally different stitch. I had learned that version from the book that started this whole project : 100 Stitches. That blog post can be read here . As you can see, a different stitch!