104 warp ends plus an extra stands in the two selvage edges, warped approximately 12 feet

6 picks of sock yarn then begin weaving ribbon yarn
hemstitch sock yarn 4x5 after a few inches of ribbon weaving
continue weaving until 17.66 inches then weave 6 picks of sock yarn and hemstitch 4x4

insert 3 cardboard spacers between mats

On coasters, remove duplicate selvage warp thread and center thread, continue as for mats with each half, weave 4” of ribbon before switching back to sock yarn

I did have a failure of my provisional apron bar when the warp was near the end, with it snapping and the warp falling, so I had finished 4 placemats and 2 coasters, then the remaining 4 coasters were on a subpar warp unfortunately