Shell mat: Crochet Mandala Doily Generator

Make a real fan ring before framing it

This shell-mat reference places six five-double-crochet fans in a twenty-four-post base. Single crochets separate the fans, and two old bases are intentionally skipped in each repeat. A fourth working round returns to a solid perimeter. The independent design question is how to account for skipped sources honestly, then preserve every stitch produced by the shell round. Mat names the intended study format; no heat resistance, finished diameter or physically tested flatness is claimed.

Set four structural round colors

Choose smooth DK cotton and begin with a four-millimeter hook. Have scissors, a tapestry needle, six repeat markers, a start marker and a ruler ready. Select Six five-post fans, four total working rounds, Joined rounds and US terms. Blue #243BCE marks the first twelve posts, gold #C29524 the twenty-four-post base, coral #C44833 the fan ring and blue the final frame. This color schedule distinguishes the actual insertion stages rather than assigning decorative names to an unchanged solid circle.

Establish twenty-four usable bases

Work twelve double crochets in a magic ring and join to the first real post. On the next round, work two double crochets in each old stitch, producing twenty-four. Starting-height chains and the ordinary join are uncounted. Divide this ring into six groups of four actual post tops. Put markers at repeat boundaries before starting the fans. Do not include the height chain or joining slip stitch as a twenty-fifth base.

Exact project and complete insertion map

Download this exact project JSON into the Mandala & Doily Generator.

1. Magic ring: ch2 (not counted),12 dc. Sl st to first actual dc. Count 12 completed stitches or units.
2. Ch2 (not counted). Repeat [0 dc,2dc in next stitch] 12 times. 24 dc. Sl st to first actual dc. Count 24 completed stitches or units.
3. Ch1 (not counted). Repeat [sc in next post, skip next post,5dc in next post, skip next post] six times. Join to first sc. Six five-post fans and six sc; 36 completed stitches. Count 36 completed stitches or units.
4. Ch2 (not counted). In each old six-stitch group [sc plus five dc], work2dc in its first and fourth stitches and one dc in each of the other four. Join to first dc. Forty-eight dc; all36old stitches preserved. Count 48 completed stitches or units.

Consume four bases per shell repeat

In the first base work one single crochet. Skip the next base, work five double crochets in the following base, and skip the fourth base. Repeat this four-base sequence six times, then join to the first single crochet. Each repeat uses two bases and deliberately skips two, so twelve old bases are used and twelve skipped. The produced stitches are six single crochets plus thirty double crochets, or thirty-six completed stitches. Coral source rings in the diagram identify intentional skips.

Restore an independently counted solid frame

Treat each old group as one single crochet followed by five double crochets. On round four, work two double crochets into that group's first and fourth stitches, and one into each of its other four. Two increases per six-stitch group produce eight posts. Across six groups, the new round has forty-eight double crochets. All thirty-six old stitch tops are preserved once as sources; the twelve skipped bases from round two are not revisited.

Keep fans and stitches distinct

The round counts twelve, twenty-four, thirty-six and forty-eight total one hundred twenty completed stitches. Six of those are the shell separators, and one hundred fourteen are double crochets. A fan is five completed posts sharing one base, not a single cluster top. There are no decorative spacing chains in this construction. Height chains and ordinary joins remain separate. Use the source map to check both the five-post shared bases and the twelve deliberate omissions.

Questions for a physical trial

Can a five-post fan be replaced by a five-post cluster without changing counts? A cluster closes to one top and needs a different transition. Can the marked skipped bases be filled to make the fabric stronger? That changes the repeat and expansion. Care for a sample, inspect the fan ring and measure its relaxed perimeter before choosing an application. Follow the troubleshooting guide if it ripples; an intentional skip and an accidentally missed source must be distinguished before changing yarn or hook.