Here’s my (slightly) modified version of Aunty Penny’s pattern for a mitred square. These measurements are specifically to make a 10x10cm square in Debbie Bliss ‘Angel’ mohair yarn.
k – knit
k2tog – knit two together
sl1 – slip 1
psso – pass slip stitch over
Cast on 31 sts on size 5mm needles.
Row 1 and every following alternate row: Knit.
Row 2: k14, sl1, k2tog, psso, k14.
Row 4: k13, sl1, k2tog, psso, k13.
Row 6 and all following alternate rows: Continue reducing in the same way, with decreased stitches forming central diagonal line, until 3 stitches remain.
Following row: sl1, k2tog, psso.
Many thanks to Aunty Penny for putting me on to this. Here’s her original, excellent advice:
20th April 2013
“I just discovered an interesting way of knitting squares, where you decrease a stitch in the middle of each row, forming a diagonal, as follows.
Cast on an odd number of stitches, 2n+1
Row 1: knit n-1 stitches, slip 1, k1, psso, knit
Row 2: as row 1
Row 3: knit n-2 stitches, slip 1, k1, psso, knit
Row 4: as row 3
Continue until there is only 1 stitch. You can either pull this through, or start on a new square by picking up n stitches along one of the edges of the first square and casting on a further n.”
“Re my comment of 20th April on diagonal squares, I’ve just been trying different decreases, knit 2 together or knit 2 together through back of loops, and for garter stitch it doesn’t seem to matter which one you do as long as it’s always the middle stitch and the stitch before that you knit together and you are consistent. These squares are particularly fetching in rainbow yarn.
I’ve also noticed that it’s a way to get a scalloped edging. Instead of carrying on decreasing until you’ve got one stitch remaining, you stop sooner and then just knit straight.”