This tutorial is for both toe up and top down socks.
When you are ready to mark the place where you want an afterthought heel, you knit half the round of stitches in scrap yarn. This row is the placement of your heel. You remove this scrap yarn later to reveal the live stitches needed to complete the heel. To avoid dropping live stitches, and generally make life easier, we will place lifelines in the rows either side of your heel placement row.
You will need
- scrap yarn the same weight as your working yarn
- two lengths of smooth cotton thread
- tapestry needle
1. Using a cotton thread and a tapestry needle, place a lifeline through the first half of the stitches on your needle. (You may find moving your sts onto the cord of your circulars (if using) makes this task easier.)
2. Heel replacement row: Using scrap yarn knit the first half of the stitches on your needle.
3. Next, slip those stitches just worked with the scrap yarn back onto your left hand needle.
4. Using working yarn, knit the first half of the stitches on your needle.
5. Using a cotton thread and a tapestry needle, place a lifeline through the stitches just worked.
6. Continuing with your working yarn, complete the second half of your stitches to the end of the round (the first half of your stitches are the bottom of the foot, and the second half of your stitches are the top of the foot).
Continue knitting in the round and complete the leg (if working toe up) or foot (if working top down) of the sock.