What is LDC in crochet?
Linked double crochet (ldc) stitches close those gaps by linking the stitches together in the middle. This creates a firmer, denser fabric that’s not quite as stiff or thick as single crochet.
How do you make a double crochet tighter?
In order to counteract that loosening of the stitch, work the yarn overs as usual, but then give your working yarn an extra tug, so that the loop on your hook curls/rolls towards you. This minimizes the yarn used in the yarn overs and tightens the loop on your hook.