Italian cast-off on a rib with knit 2, purl 2

In this DROPS video we show you how to sew an Italian cast-off with a rib of knit 2, purl 2. Start with a long strand-end, the length depends on the number of stitches to be cast on. All stitches are sewn twice before being slipped off the needle. All knitted stitches are first sewn purl-wise, then slipped off knit-wise and all purled stitches are first sewn knit-wise, then slipped off purl-wise.

Begin as follows, before following points 1 to 4 below: Sew the first stitch purl-wise, pull out the strand, insert the needle from the wrong side and between stitches 2 and 3, pull out the strand, then sew stitch 3 knit-wise.

Now repeat points 1-4 as described here (we show this four times in the video):
1 - Sew stitch-1 knit-wise, slip the stitch, twist the needle, sew the next stitch purl-wise and pull out the strand.
2 - Sew stitch-2 purl-wise, pull out the strand, sew stitch-3 knit-wise, pull out the strand.
3 - Sew stitch-1 knit-wise, slip the stitch, pull out the strand, sew stitch-3 purl-wise, pull out the strand and slip stitch-1.
4 - Sew stitch-1 purl-wise, pull out the strand and slip the stitch. From the wrong side, insert the needle between stitches 2 and 3, pull out the strand and sew stitch-3 knit-wise.