Crochet lace is an application of the art of crochet. Slip stitch crochet is very similar to knitting. Cotton also is used to make yarn used in crochet and knitting. Accurate knitting needle and crochet hook sizing is important for both crafts. A hook gauge is used for measuring both knitting needles and crochet hooks. The slip knot is used as a starting point for crochet and knitting. The tension of the yarn is much looser than in standard crochet or knitting. Homasote is used for blocking knit or crochet pieces. Cro-tatting combines needle tatting with crochet. Elementary students paint, draw, sculpt, knit, weave, and crochet. Crochet and knitted styles are preferred by young girls and infants. Greene enjoys crocheting in his spare time where he learned to crochet since 2008. Many people consider cro-tatting more difficult than crochet or needle tatting. This crochet machine was the first production overlock sewing machine. Seed beads began to be used for embroidery, crochet, and numerous off-loom techniques.