Weave in crochet ends
Secure crochet tails through substantial reverse-side stitch paths, then turn back through another route.
Work the technique
Thread a blunt needle and pass through several stitches without pulling the fabric tighter. Change direction and weave through another group. For a ring, include the centre loops before moving outward.
Try it on a sample
Weave both tails of a two-colour square, wash it and inspect the edges and centre.
Check and recover
A short straight tail can slip from an open lace space. Follow solid stitches, keep extra length in slippery yarn and trim only after the join holds.