Interlocking ‘I’s (pattern)
This blackwork pattern is made up of rows of long straight stitches with a bar at either end. It is fairly large in scale and is good for creating a linear texture, worked either horizontally or vertically.
Start by completing a running stitch over seven threads and under one thread of open weave fabric.
The second row should be placed two fabric threads away, each running stitch should be offset from the previous line.
The next step is to work a small running stitch over two threads across the shape in the opposite direction. Each stitch should be placed at each end of the large straight stitches previously worked.
Structure of stitch
The pattern can be worked with across the shape horizontally or vertically depending on the design.
Becky Hogg, RSN Essential Stitch Guides: Blackwork (2010)
Various Authors, The Royal School of Needlework Book of Embroidery (2018) , p.143