Rubrics
A step-by-step tutorial for a knitted rounded hem: work the ribbing, choose how strong the curve should be, set aside the center stitches, shape short rows with yarn overs at the turns, and repeat until every stitch is knitted.
BeginnerFreeThe lower edge of the piece comes out smoothly shaped: the center stays lower while the sides rise. This edge works well for a sweater or any other piece that needs a soft, rounded silhouette.
The author notes that the pattern for the piece can be anything; the example shows the technique on a sweater knitted in stockinette stitch.
If you only want to lift the side sections slightly, leave 2/3 of the stitches for the center section. For a noticeable curve, the example leaves 10 center stitches out of 60.
First knit the usual lower edge, then decide how many stitches will stay in the center section.
Cast on the required number of stitches and knit the ribbing. In the author's example this is a 2x2 rib, but you can choose any ribbing, including a lace one.
Decide how strong the curve will be. For a gentle lift at the sides, leave 2/3 of the stitches in the center section; for a noticeable curve, the author gives the example of 10 center stitches out of 60.
With 60 stitches, a noticeable curve starts with 10 center stitches. This is the author's example, not a universal formula for every size.
From here, stitches are brought into work gradually. Yarn overs are used at the turns so the row continues without a sharp break.
In the example, knit the first 25 stitches in 2x2 ribbing, then switch to stockinette, knit 10 center stitches as knit stitches, and turn the work.
On the purl row, make a yarn over, purl the 10 center stitches, then purl 3 more stitches from the ribbing. Then turn the work again.
Make a yarn over, then knit all the center stitches. Knit the last stitch — the yarn over from the purl row — together with the stitch, then knit 2 more stitches from the ribbing.
The source specifically describes the yarn over at the turn and knitting it together with the stitch in the next row.
Keep repeating the steps described above, gradually bringing the ribbing stitches into work. Continue until every stitch on the needle has been knitted.
After the short rows, the edge already has the shape you want; all that's left is to carefully set the fabric.
The result is a smoothly shaped rounded lower edge. The author recommends lightly steaming the finished piece through cheesecloth.
The center should stay lower, and the side sections should rise smoothly, without a sharp angle.
Steam only lightly and through cheesecloth, as the source instructs, so you don't stretch out the lower edge.
Instead of 2x2 ribbing, you can choose a different rib or a lace variant: the source explicitly allows any pattern for the lower edge.
The strength of the curve is adjusted by the number of center stitches: 2/3 of the stitches give a soft lift at the sides, while the example of 10 out of 60 gives a more noticeable arc.
This master class is also available in:
The side sections barely rose relative to the center.
Too many stitches were left for the center section, or the gentle-lift option was chosen.
Check against the source's logic: 2/3 of the stitches give a gentle lift, while for a noticeable curve the author leaves 10 center stitches out of 60.
The center noticeably drops down, and the transition to the sides comes out steep.
Too few stitches were left for the center section relative to the overall width.
For a softer silhouette, use the source's option with a larger center section — for example, aim for 2/3 of the stitches for a gentle lift at the sides.
Stitches from the ribbing are brought in unevenly, and the row gets thrown off.
The transition from the first 25 stitches in ribbing to the 10 center knit stitches in the example was missed.
For a practice swatch, follow the author's example literally: 25 stitches in ribbing, 10 knit stitches, turn, then a purl row with a yarn over and 3 stitches from the ribbing.
The turn points look loose.
The yarn over at the turn was skipped, or wasn't knitted together with the stitch in the following knit row.
Keep to the sequence described: make a yarn over at the turn, then knit the yarn over from the purl row together with the stitch.
The curve is there, but the fabric looks wavy or untidy.
The stitches haven't been set yet after the short rows, or not all the stitches were finished.
Finish knitting every stitch on the needle as the source instructs, then lightly steam the finished piece through cheesecloth.
No. The whole point of the technique in the source is to shape the curve with short rows, with no separate piece and no additional edging.
Yes. The author writes that you can choose any pattern; the example shows the technique in stockinette stitch after the ribbing.
For a gentle lift of the side sections, the source suggests leaving 2/3 of the stitches. For a noticeable curve, the example leaves 10 center stitches out of 60.
According to the instructions, the yarn over from the purl row is knitted together with the stitch in the following knit row.
Repeat the steps described until you've knitted every stitch on the needle, then lightly steam the finished piece through cheesecloth.
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Can this method be used for knitting with the curve going upward? I have an idea to knit a model like that.

Komok.me
Komok is a craft community for master classes, lessons, and projects in sewing, knitting, and other crafts.
Yeah, there's a similar method, it's easy to knit too, I'll post a tutorial soon. And the little sweater is cute, I liked it!