This is the edging I put on my Lapse of Reason moebius wrap. The wrap pattern is available for free on Ravelry .
I used an I hook, which is compatible to the size of the knitting needle I used.
Stitches/terms used used
ch - chain
ss - slip stitch
sc - single crochet
dc - double crochet
sp - space
sk - skip
st - stitch
This edging is worked over a distance of 9 stitches on the edge of what ever you are attaching it to.
Personally I do not worry about exact stitch count of the fo that I attach it to, I just follow the pattern and when I'm about 1/2 way to the end I figure out if I have enough stitches to complete the pattern. If I have a few to many stitches than the pattern calls for I'll just skip a total of 4 here and there when working the edging to make it come out correct. Or if I don't have enough I'll just skip 2 instead of 3 stitches on the edge a couple times spread out so it evens up.
I worked this wrap using Caron Simply Soft and I bound off the knitting in single crochet by inserting the hook into the 1st stitch to be bound off , yo and draw up a loop, *insert hook into next stitch to be bound off, yo and draw up a loop, yo and draw through 2 loops on hook* Repeat around untill all stitches are bound off. This is the same bind off as the knit stretchy bo but it's just easier for me to do in crochet.
For the edging I attached my 2nd color at any stitch.
Round 2: *ch3, ss to 1st ch, sk next ch3 sp, (dc, ch3, ss to 1st ch) 5 times in next ch3 sp, sk next ch3 sp, ss to next sc* repeat from * to* around. join to beginning of round. break yarn and weave in ends.