sewists know that sewing knits is different from sewing fabrics.
now sewing machine knits is a different different animal. the fabric has to be stabilized in some way because when you cut it unravels ending up in a useless mess of yarns. sharp scissors or much better, rotary cutters aid in keeping the edges as neat as possible.
there are some ways to stabilise the knit such as using liquid stabiliser, fray check ( envy,envy impossible to get here) iron on fusible web such as bondaweb and if push comes to shove elmer's washable school glue.they'll all disappear when washed.
you sew a seam about 2 cms away from the seam with long basting stitches, sew the actual seam, take out the basting trim and finish the raw edges with overcast stitch.
side note: if i had a serger it would be easier, but i'm NOT going there.
the
walking foot aka plaid matcher is an essential tool when sewing knits with a sewing machine.
it works with the feed dogs to feed both layers of fabric evenly. thus you don't end with one layer shorter or longer than the other.
disclaimer: although i sound very knowledgeable, do not be fooled. i have been getting all my education
here. talk about knowledge transfer!
neki desu