Crochet Guide

Filet crochet is a method of forming designs with solid and openwork squares
called blocks (bl) and spaces or meshes (sp/mesh). A block is made with
3 dc, and a space/mesh is ch 2, dc. A bl will appear to have 4 dc; the first dc of the bl is the dc that defines the sp preceding the bl. A group of 3 bl will have 9 dc plus 1 dc of sp preceding bl. A foundation ch is 3 times the number of sps in the first row plus 5 if the row begins with a sp (dc in 8th ch from hook) or plus 3 if row begins with a bl (dc in 4th ch from hook and next 2 ch). On following rows ch 5 if next row begins with a sp or ch 3 if row begins with bl.