To work in a round:
Row 1: With right side facing you, dc around edge of your project. Join to first dc with a sl st. Ch2.
Row 2: FPDC around post of next dc (mark this stitch with a stitch marker) and around post of ea dc to end. ch 2.
Row 3: FPDC around post of st with marker, re-insert marker in that st, FPDC around post of every dc to end. ch2.
Repeat row 3 until fabric curls under as much as you would like. Fasten off.
To work in rows:
Row 1: With right side facing you, dc along edge of your project to end of row, ch 2, turn
Row 2: BPDC around post of next dc and around post of ea dc to end. ch2, turn
Row 3: FPDC around post of next dc and around post of ea dc to end. Ch2, turn.
Repeat rows 2 and 3 until your roll is as wide as you want it. Fasten off.
Note: In the photo below, I used Red Heart Soft yarn and a size H crochet hook. The 1st photo shows the roll made with post double crochet stitches and the second one shows the roll worked with post half-double crochet stitches. Also, you can make your roll as thick as you want–just keep putting post stitches on top of each other until your edge curls nicely.
Variations: Experiment with the post stitches. The post double crochet stitches make a loose roll while the post half-double crochet stitches make a very tight roll.
Edited by Roli, 07 November 2009 - 04:41 AM.
Added clearer photos