@Gurggles Hence, the trials.

@Gurggles #alt4u

A high-speed video of darning.

The camera is fixed over a piece of knitting with a hole in. A needle is used to sew a fine thread in a series of tall stitches across the hole. Yarn matching the original is carefully sewn around this scaffold to recreate each missing knitted stitch in turn. Finally, the fine threads are cut and pulled out with tweezers. The hole is repaired so neatly it is impossible to see where it was.