In an effort to figure out why my moss stitch* was coming out crooked, I knit a bunch of dishcloths using different techniques. I mostly varied knitting style (English, Norwegian, or Continental) and stitch mount (Western, Eastern, or Combination). With the last two dishcloths I also switched needles and then selvage.
These were all knit with Lily Sugar’n Cream (100% cotton dishcloth yarn plied with an S twist) in the colour Soleil, with a 29-stitch Latvian cast on and a Latvian bind off. All of them have been machine washed and tumble dried hot to encourage the yarn to exaggerate whatever it wants to do.
Knitting style: Norwegian. Stitch mount: Western. Needles: 3.5mm Knitter's Pride Day & Nite. No selvage.
Knitting style: English. Stitch mount: Western. Needles: 3.5mm Knitter's Pride Day & Nite. No selvage.
Knitting style: Norwegian. Stitch mount: Combination. Needles: 3.5mm Knitter's Pride Day & Nite. No selvage.
Knitting style: English. Stitch mount: Combination. Needles: 3.5mm Knitter's Pride Day & Nite. No selvage.
Knitting style: Continental. Stitch mount: Combination. Needles: 3.5mm Knitter's Pride Day & Nite. No selvage.
Knitting style: Continental. Stitch mount: Eastern. Needles: 3.5mm Knitter's Pride Day & Nite. No selvage.
Knitting style: Continental. Stitch mount: Eastern. Needles: 3mm Tulip CarryCs. No selvage.
Knitting style: Continental. Stitch mount: Eastern. Needles: 3mm Tulip CarryCs. With 2-stitch faux i-cord selvage.
What I determined is that in order for my moss stitch to come out with no bias, I need to knit it Eastern (i.e. wrapping the yarn clockwise so that the leading leg of the stitch ends up in back). I have NO IDEA why this is.
I am now knitting another scarf swatch to make sure that my Eastern knitting works for the rest of the pattern. So far so good.
*Irish moss stitch in the UK.