Circular Scarf - free pattern

Circular Scarf

Circular Scarf
A simple crochet project using only one ball of cotton thread. Made up of a repetitive pattern that is easy to do, and quite addicting. 
This design has two innovations: 1. no long starting chain, no  foundation single crochet (fsc) or double crochet (fdc), and 2. no need to add edging rounds, it begins with a neat edge.

Yarn: Coats and Clark, Anchor Lifestyles mercerized cotton, size 10 (40 g), Color, 1 ball
Hook: Size 2.5 mm (C or 4/0), adjust hook size if necessary to obtain correct gauge
Notions: yarn needle for weaving ends
Gauge: 5 pattern repeats and 9 rows = 4" in pattern stitch
Finished measurement: approx. 35 " (89 cm) circumference, 5 3/4" (14 1/2 cm) wide

Notes: Pattern is worked in rounds, turned after every round.
To customize length, increase or decrease pattern repeats on the 1st round. To customize width, increase or decrease rnds.

Stitches used
ch - chain
sl st - slip stitch
dc - double crochet
tr - treble crochet
Special stitch
2-tr Cluster – [Yarn over hook (yo) twice, insert hook in stitch, yo, draw yarn through stitch, (yo hook, draw yarn through 2 loops on hook) twice] 2 times, yo, draw yarn through 3 loops on hook.

Scarf

Rnd 1: Ch 5, tr in 4th ch from hook, (ch 6, tr in 4th ch from hook) repeat 43 times, ch 1, sl st in the 1st ch of this rnd — 44 pattern repeats Rnd 2: Ch 4, tr in the same st, (skip the tr and ch-3 in 1st rnd, 2-tr cluster in the next ch, ch 3, dc in 3rd ch from hook, 2-tr cluster in the next ch) repeat around, sl st on the 1st tr of this rnd to join, turn. Rnd 3: Ch 4, tr in same st, (2-tr cluster in the next tr, ch 3, dc in 3rd ch from hook, 2-tr cluster in the next st) repeat around, join, turn. Rnds 4-12 (or desired width): Repeat rnd 3.
Fasten off and weave in ends.

Cluster Stitch Pattern