This is the second post (out of 15) in a series about different shawl shapes and how to knit them. The introduction post, which lays out the game plan can be found… thisaway.
The Wedge Circle Center Out
There are various ways to create a circular shawl. The first way is to evenly increasing 8 stitches every other round to form wedges.
CO 8sts. Join in round, being careful not to twist.
R1: [k1, yo, pm] 8x.
R2: Knit around.
R3: [k to marker, yo, sm] 8x.
R4: Knit around.
This shaping actually creates an octagon, which you then block into a circle.
To make the swirl curl in the opposite direction simply [yo, k to marker] every other round, rather then [k to marker, yo].
The Wedge Circle Hem In
To work a circular shawl made up of wedges from the hem to center, use the same concept and similar formulas as working a square shawl from the hem to center.
Determine your final gauge and the desired radius of your shawl. The radius is half the width of your final shawl, or the length from the center to the edge of your shawl.
1. [number of rounds per inch] x [desired radius] = [number of rounds total]
2. [number of rounds total] / 2 = [number of decrease rounds] you divide by two because you decrease every other round
3. [number of decrease rounds] x [8sts decreased per decrease round] = [number of stitches decrease]
[number of stitches decreased] + [8 BO stitches] = [number of sts to cast on]
Make sure your cast on number is divisible by 8.
CO this number and work 8 evenly spaced single decreases every other round until you have 8 sts on the needles. Break, yarn, leaving a tail, and thread the tail through all live sts, pull tight and weave in your end. (The same way you would finish off the crown of a hat.)
So if you cast on 48 sts. Join in the round, being careful not to twist.
R1: [K6, pm] 8x.
R2: [K4, k2tog, sm] 8x.
R3: Knit around.
R4: [K to 2 sts before marker, k2tog, sm] 8x.
The books this series spawned:
Shawl Geometry I: the math of shaping shawls for non mathy people
Shawl Geometry II: 16 more shawl shapes to design and play with
Shawl Geometry III: the relationships behind the numbers