Where you are talking about is presumably as you pass from side to side over a vertical gimp. Sometimes the gimp is 'vertical' for only one pin hole (as on a six hole honey comb ring), sometimes for several (on lozenge shapes, for example).
If you don't do this stitch as a catch pin, the ground stitch with its uncovered pin, will move sideways towards the gimp and compress the gimp against the honeycomb stitches. By doing the catch pin, the gimp has its own space. This is how I was taught it by Pat Read, and how I have always taught it to others. Jacquie in Lincolnshire - To unsubscribe send email to majord...@arachne.com containing the line: unsubscribe lace y...@address.here. For help, write to arachnemodera...@yahoo.com