Attaching Cuffs to Tall Socks?

[piperdbh]

The stretchiest way to do it would be thus:
After you've cut the top off a pre-made sock, use double-pointed needles to pick up all the stitches. Have your cuff made up to the final round, preferably using the same number of stitches as your sock. Slip the sock inside the ring formed by your cuff, and use a suspended three-needle bind-off to attach the two fabrics.
The easiest way would be to machine-sew the two pieces together using a three-step zigzag. It wouldn't look as good, but it would be much faster.

[MT4Runner]

The easiest way would be to machine-sew the two pieces together using a three-step zigzag. It wouldn't look as good, but it would be much faster.

If the cuff is a larger diameter than the sock body, the machine-sewn seam will generally "roll" toward your leg and often hide the machine stitching when worn--even if it's visible while the hose are lying flat in your wardrobe drawer!