Crochet magic ring
A sliding loop lets you tighten the centre of a US single-crochet round.
Work the technique
Wrap yarn into a loop, insert the hook, pull up working yarn and chain 1 (not counted). Work 6 sc into the loop around both ring strand and tail. Pull the tail to close; mark the first sc.
Try it on a sample
Round 1 has 6 sc. Round 2: 2 sc in each stitch (12). Round 3: [sc, increase] 6 times (18).
Check and recover
If the ring opens, weave the tail through the centre in more than one direction. Use a chained ring when the chosen slippery yarn will not hold a secure sliding centre.