Smooth Oval Structured Basket

Continuous-spiral single crochet · intermediate

A dense, flat oval base worked in a continuous spiral (no slip-stitch joins), then turned up into rigid sides. The two long sides stay locked at 66 sc every round. All growth happens in the two end caps: 3 increases per cap (6 per round), mirrored and shifted so the oval stays smoothly rounded, with no hexagonal points.

Skill level: Intermediate
Finished measurements:

• Base (after Round 28): approx 12½ × 29" (31.5 × 73.5 cm)
• Basket with 18 side rounds: approx 12½ × 29 × 4" tall (31.5 × 73.5 × 10 cm)
  Side height is adjustable; see Sides.

Yarn

Worsted-weight cotton (or cotton blend), smooth, low-halo.

• Base only: 500 yd (457 m)
• Complete basket (base + 18 side rounds + handles): 900 yd (825 m)
  Firm cotton (e.g. worsted kitchen cotton / 24/7 cotton) is preferred for rigidity.

Hook

US G-6 / 4 mm (or the hook that gives gauge and a dense, gap-free fabric).
Go down 1–2 sizes from the yarn label if the swatch feels soft or holey.

Notions

• 4 locking stitch markers (junctions) + 1 running marker (start of round)
• Tapestry needle
• Optional: clothesline / piping cord to crochet over; fabric stiffener spray

Gauge

16 sc and 18 rounds = 4" (10 cm) in single crochet, unblocked, with working hook.
Dense fabric is structural. If you have gaps, drop a hook size.

Abbreviations (US)

• ch — chain
• sc — single crochet
• inc — 2 sc in the same stitch
• BLO — back loop only
• st(s) — stitch(es)
• rnd(s) — round(s)
• PM — place marker
• sk — skip
• sl st — slip stitch (finishing / seaming only — never used to join rounds)

Notes

1. Work in a continuous spiral. Do not join, do not turn, do not chain at the start of a round.
2. Long sides are non-negotiable: 66 sc, every round, no increases. Mark the four junctions and move the markers up into the stitch worked into the marked stitch.
3. Exactly 6 increases per base round (3 in each end cap). Fewer cups; more ruffles.
4. Mirroring: Curve 2 is always the reverse of Curve 1, so both ends stay identical.
5. Shift: Odd and even rounds swap whether the increase leads or trails each group, so increases fall in the gaps of the previous round instead of stacking into points.
6. Count stitches at the end of every round. The running total is listed beside each round.
7. inc always means 2 sc in the indicated stitch.

Marker map (keep these for the entire base):

• C1 — first stitch of Curve 1 (starting cap)
• S1 — first stitch of Long side 1 (66 sc)
• C2 — first stitch of Curve 2 (far cap)
• S2 — first stitch of Long side 2 (66 sc)
• Running marker in the first stitch of the round.

Base

Foundation: Ch 69 (68 working chains + 1 turning chain).

Round 1:
Work 3 sc in 2nd ch from hook (Curve 1; PM C1 in the first of these 3), sc in next 66 ch (Long side 1; PM S1 in the first of these 66), 3 sc in last ch (Curve 2; PM C2 in the first of these 3). Rotate the piece and work along the unused loops of the foundation chain: sc in next 66 unused loops (Long side 2; PM S2 in the first of these 66). Do not join. [138 sc]
(66 + 3 + 66 + 3 = 138 ✓)

Round 2 (even, m = 0):
Curve 1: inc in each of next 3 sts,
Long side 1: 66 sc,
Curve 2: inc in each of next 3 sts,
Long side 2: 66 sc.
[144 sc] (6 increases → 138 + 6 = 144 ✓)

Round 3 (odd, m = 1):
Curve 1: (sc in next st, inc) 3 times,
Long side 1: 66 sc,
Curve 2: (inc, sc in next st) 3 times,
Long side 2: 66 sc.
[150 sc] (6 increases → 144 + 6 = 150 ✓)

Round 4 (even, m = 2):
Curve 1: (inc, sc in next 2 sts) 3 times,
Long side 1: 66 sc,
Curve 2: (sc in next 2 sts, inc) 3 times,
Long side 2: 66 sc.
[156 sc] (6 increases → 150 + 6 = 156 ✓)

Round 5 (odd, m = 3):
Curve 1: (sc in next 3 sts, inc) 3 times,
Long side 1: 66 sc,
Curve 2: (inc, sc in next 3 sts) 3 times,
Long side 2: 66 sc.
[162 sc] (6 increases → 156 + 6 = 162 ✓)

Round 6 (even, m = 4):
Curve 1: (inc, sc in next 4 sts) 3 times,
Long side 1: 66 sc,
Curve 2: (sc in next 4 sts, inc) 3 times,
Long side 2: 66 sc.
[168 sc] (6 increases → 162 + 6 = 168 ✓)

Rounds 7–28 — established rhythm
Let m = (round number) − 2. Long sides are always 66 sc. Work 3 increase groups in each curve as follows:

• Odd rounds: Curve 1 = (sc in next m sts, inc) 3 times; Curve 2 = (inc, sc in next m sts) 3 times.
• Even rounds: Curve 1 = (inc, sc in next m sts) 3 times; Curve 2 = (sc in next m sts, inc) 3 times.

Each curve uses exactly 3 × (round − 1) stitches from the previous round and produces 3 × (round number) stitches (3 increases per curve → 6 per round ✓).

Round-by-round totals (copy for counting):
1: 138 · 2: 144 · 3: 150 · 4: 156 · 5: 162 · 6: 168 · 7: 174 · 8: 180 · 9: 186 · 10: 192 · 11: 198 · 12: 204 · 13: 210 · 14: 216 · 15: 222 · 16: 228 · 17: 234 · 18: 240 · 19: 246 · 20: 252 · 21: 258 · 22: 264 · 23: 270 · 24: 276 · 25: 282 · 26: 288 · 27: 294 · 28: 300

Check Round 28: Curve 1 uses 81 sts and makes 84; Curve 2 uses 81 sts and makes 84; long sides 66 + 66. 84 + 66 + 84 + 66 = 300 ✓
Check growth: 132 + (6 × 28) = 132 + 168 = 300 ✓

The base should lie flat. If it cups, the fabric is too tight or an increase was missed; if it ruffles, an extra increase landed on a long side. Block the damp base flat under a heavy book before building the sides.

Base-to-sides transition

This BLO round is the structural fold. Do not skip it.

Transition round: Sc BLO in each st around. Do not join. [300 sc]
(0 increases → 300 = 300 ✓)

Resume working through both loops from the next round onward.

Sides

Work even (no increases, no decreases) in continuous spiral sc.

Side rounds 1–14: Sc in each st around. [300 sc every round]

Keep C1 / S1 / C2 / S2 markers moving up so the long sides stay identifiable for the handles.

Handle round (Side round 15):
Sc to S1 (start of Long side 1), sc in next 27 sts, ch 12, sk 12 sts, sc in next 27 sts,
sc in each st of Curve 2,
sc in next 27 sts of Long side 2, ch 12, sk 12 sts, sc in next 27 sts,
sc in each remaining st of Curve 1 to the running marker.
[300 positions: 276 sc + two ch-12 spaces]
(27 + 12 + 27 = 66 per long side ✓; handles centered on the long sides ✓)

Side round 16: Sc in each sc around, working 12 sc into each ch-12 space. [300 sc]

Side rounds 17–18: Sc in each st around. [300 sc]

For a tray, stop after about 9 side rounds (approx 2" / 5 cm) and omit handles, or place the handle round 3 rounds below the rim of whatever height you choose. For a deeper basket, continue even rounds before the handle round (every 4½ rounds ≈ 1" / 2.5 cm).

Handles

The chain-space handles above sit on the long sides of the oval, which is where the load belongs.

Reinforce: With yarn tail or a separate length, whip stitch or sl st along the 12 sc that sit on each handle opening, and into the stitches immediately beside each handle corner. Pull snug but do not cinch the rim.

Optional strap handles: Instead of the chain-space round, crochet two straps of 8 sc × 28 rows (or desired length), then sew each strap to a long side, centered, with the inner edges about 12 sts apart. Anchor with extra whip stitch through both loops.

Structural rigidity

• Cotton, jute, t-shirt yarn, or rope/cord hold shape; acrylic alone will slump.
• A hook 1–2 sizes below the label recommendation gives the dense fabric a basket needs.
• For a standing tray/hamper: work every side round over clothesline or piping cord.
• The piece must hold its shape when empty. If it does not, drop a hook size or add cord.

Sizing (this yarn / this gauge)

This pattern is written for the requested 28-round oval (chain 68 + 1, 66-st sides). At the stated gauge that is a large basket or floor tray.

Stitch count at any base round n is 132 + 6n. Stop the base when the oval is the size you want, then work the BLO transition and even sides on that count.

Finishing

1. After the last side round, sl st in the next st to level the spiral. Fasten off. Weave in ends firmly (load-bearing fabric).
2. Optional rim: Reverse single crochet (crab stitch) around the top edge for a compact, finished lip.
3. Optional: Light fabric-stiffener spray on the dry basket; reshape and let dry.
4. Block the base flat under a heavy book while damp if it was worked separately before the sides.

The oval is correct when the two long sides remain straight columns of 66 stitches, both end caps are equally rounded, and no six-point “stop-sign” corners appear at the ends.