Perfectly round crown
Knitted on 5.5mm needles with only one ball of RYC Soft tweed, it was a real quickie. The ball band suggested 12sts/10cm (4in) tension on 8mm needles, but whichever size needles I tried I got exactly the same tension of 16sts/ 10cm. Have no idea why. The hat is worked in a round bottom up, the crown is worked separately from the centre and then they are joined together with 3 needle bind off.
To fit 18 (20, 22, 24) inches/ 46 (51, 56, 61)cm head circumference
You will need 68 (76, 84, 91) yards of RYC Soft tweed
Tension 16sts per 4in/ 10cm
5.5 mm (US 9) circular needle and a set of 5.5 mm (US 9) double pointed needles
Knit f/b - knit through front and back of the stitch - increases one stitch
Cast on 64 (72, 80, 88) sts, place contrast marker and join for knitting in a round.
Knit every round until the hat measures 4 (4, 4.5, 4.5) inches from the cast on edge. Set aside.
With double pointed needles cast on 4 sts, place contrast marker and join for knitting in a round.
Round 1: Knit f/b of every stitch and place a marking thread after every stitch - 8sts on the needles.
Round 2: Knit f/b to end - 16sts on the needles.
Round 3: Knit every stitch.
Round 4: [Knit to last stitch before marker, knit f/b, slip marker] - to end - 24sts on the needles.
Round 5: Knit every stitch
Repeat rounds 4 and 5 until 6 (7, 8, 9) more times. 64 (72, 80, 88) sts on the needles.
Place both pieces with right sides facing you and wrong sides together. Work 3-needle bind. Weave in ends.