Easy as Pi(e) Blanket by Anna Richardson
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Easy as Pi(e) Blanket

March 2013
DK (11 wpi) ?
22 stitches and 28 rows = 4 inches
in stockinette
US 6 - 4.0 mm
1200 - 1260 yards (1097 - 1152 m)
31.5x31.5"/80x80cm with instructions to modify to any size
This pattern is available for free.

There is a KAL started for this blanket in the Vannas Choice Forum. Includes really helpful photo tutorials on provisional CO and LLI.

Maths and knitting have always gone hand in hand for me, so it was inevitable that I would attempt to encompass a few basic mathematical principles in a blanket for my first offspring. It was an enjoyable challenge both calculating the stitch circumference and relative arcs of the ‘pie’ slices and then transforming those calculations into a relatively simple knit-engineering solution.

This is a modular knit with circles worked back-and-forth in short-rows then converted to squares via the short-row working of stitches picked-up around the circumference. The original blanket’s nine circle-squares can be added to, to make any sized square or rectangle. Full instructions on how to do so, calculating additional yarn requirements, are included in the pattern. Also included is a detailed blank schematic to design your own colour sequence.

Pattern is written in full and is rated as tangy (by Knitty standards).

MC 5 skeins (250g) Sirdar Snuggly Baby Bamboo DK in Mushroom (170)
CC-1 1 skein (50g) Sirdar Snuggly Baby Bamboo DK in Rocking Horse (126)
CC-2 1 skein (50g) Sirdar Snuggly Baby Bamboo DK in Yummy Yellow (123)
CC-3 1 skein (50g) Sirdar Snuggly Baby Bamboo DK in Orange (166)
CC-4 1 skein (50g) Sirdar Snuggly Baby Bamboo DK in Groovy Green (122)
CC-5 1 skein (50g) Sirdar Snuggly Baby Bamboo DK in Jack-in-a-box (159)
CC-6 1 skein (50g) Sirdar Snuggly Baby Bamboo DK in Baby Berries (161)
CC-7 1 skein (50g) Sirdar Snuggly Baby Bamboo DK in Skittle (127)
1 set 4mm double-point needles at least 15cm long (3 needed only) or as needed to achieve tension
4mm circular needle (60-80cm)
4mm circular needle (120cm)
5 Stitch markers
4 long stiff blocking wires and adequate T-pins
Tapestry needle

22st x 28 rows = 10cm/ 4 inches over stocking stitch on 4mm needles

Blocks to 31.5 x 31.5 inches (80 x 80cm). Individual circles have a radius of 4.25 inches (11cm). Single squares measure 9 x 9 inches (23 x 23cm).