Shell combination: Stitch Pattern Generator

Balance a shared-base fan with skipped stitches

This panel combines a nineteen-stitch plain foundation with three rows of five-double-crochet shells, alternating with plain single-crochet rows. A shell puts several new stitches into one old position. The neighboring skipped stitches balance that expansion so each completed row still has nineteen stitch tops. The exercise makes that consumption rule visible instead of treating a shell as five unrelated posts in a square grid.

Materials and exact settings

Start with smooth DK cotton and a four-millimeter hook as a trial pairing. Use one color, two edge markers, scissors, a tapestry needle and a ruler. Select Shell and plain rows, width nineteen and height seven. The required width is six times a whole number plus one; nineteen means three six-base groups after an initial edge stitch. Primary stitch and Basic repeat settings do not define this structure. Physical size and yarn length must come from a washed sample.

Build the counted foundation

Chain twenty and work nineteen single crochets beginning in the second chain from the hook. Mark the first and last completed stitch. This row provides nineteen clearly identifiable old stitch tops for the first fan row. Chain one and turn without counting the turning chain as another stitch. Work single crochet into the first old stitch before beginning the six-base groups.

Chart and complete working sequence

Download the exact JSON into the Stitch Pattern Generator.

1. Ch 20. Starting in second chain from hook, work 19 sc. Count 19.
2. Ch 1, turn (turning chain does not count). Sc in first stitch. Repeat [skip 2 stitches, 5 dc in next stitch, skip 2 stitches, sc in next stitch] 3 times. Count 19.
3. Ch 1, turn (turning chain does not count). Work 19 sc, one in each old stitch. Count 19.
4. Ch 1, turn (turning chain does not count). Sc in first stitch. Repeat [skip 2 stitches, 5 dc in next stitch, skip 2 stitches, sc in next stitch] 3 times. Count 19.
5. Ch 1, turn (turning chain does not count). Work 19 sc, one in each old stitch. Count 19.
6. Ch 1, turn (turning chain does not count). Sc in first stitch. Repeat [skip 2 stitches, 5 dc in next stitch, skip 2 stitches, sc in next stitch] 3 times. Count 19.
7. Ch 1, turn (turning chain does not count). Work 19 sc, one in each old stitch. Count 19.

Place each shell at its actual source

For the first group, skip old stitches two and three, work five double crochets into old stitch four, skip old stitches five and six, and single crochet into old stitch seven. The next shells share old stitches ten and sixteen. Their following single crochets land in thirteen and nineteen. This uses every old position once as either a worked or deliberately skipped base. The final single crochet lands exactly at the marked edge.

Recover a plain row above the fans

Chain one and turn. Work one single crochet into every completed stitch of the shell row, including all five tops of each fan. Do not put five stitches into the same old shell center again on this plain row. There are nineteen available tops, so the plain row also has nineteen stitches. Repeat the shell/plain pair twice more, finishing on plain row seven. The diagram's connecting lines converge at shared bases, while the intervening plain rows return to one-to-one insertions.

Verify the complete budget

Each shell row produces fifteen double crochets and four single crochets. Three shell rows therefore contribute forty-five double crochets and twelve single crochets. Four plain rows add seventy-six single crochets, giving eighty-eight single crochets and forty-five double crochets overall: 133 fabric stitches. Twelve bases are skipped on each shell row, but those skips are not extra stitches. Twenty foundation chains and six later turning chains are separate from the fabric count.

Errors, finishing and use

If a fan row ends before the last marked stitch, recount skipped bases rather than adding a compensating stitch at the edge. If the next plain row has only seven stitches, the fan's five tops may have been mistaken for one unit. Fasten off and weave ends, then wash to evaluate the fan spread. Can width twenty use this repeat? No; it fails the six-times-plus-one rule. Is flatness physically certified? No; this is an original algorithm and diagram study. Use the sample to plan a decorative panel with separately measured edges, and consult the count-recovery guide before continuing a mismatched row.