From Crochet at About.com: Rooster Needlecraft Free Chart, Suitable For Various Types of Needlecrafts
An Original by Sandi Marshall

To make a crocheted background to cross-stitch the design on, starting chain is 26 chains for single crochet or 25 chains for afghan stitch. Work this background for 25 rows.

Working the Chart in Filet Crochet For a 4 dc mesh, starting chain is 76, plus chain 3, (which will count as first dc of first row), plus chain 2 (which is the ch-2 of the first open mesh). Begin by working a double crochet in the 8th chain from the hook. Follow chart for placement of solid mesh and open mesh for each row. For a refresher on how to do open and solid mesh, see Basics link below.

Chart is worked starting at the bottom right; work first row right to left. Second row is worked left to right. Continue alternating row directions in this same manner, following chart.

Approximate finished sizes (for each square) in filet crochet (once through the chart, worked in 4 dc mesh):
With size 5 thread: (80 yards) and a size US 4 steel hook, finished size is about 6.9 inches x 7.9 inches.
With size 10 thread: (71 yards) and a size US 7 steel hook, finished size is about 5.8 inches x 6.2 inches.
With size 20 thread: (67 yards) and a size US 9 steel hook, finished size is about 5.5 inches x 6 inches.
With size 30 thread: (62 yards) and a size US 11 steel hook, finished size is about 5.2 inches x 5.8 inches.
With fingering/baby weight yarn: (156 yards) and a size US F hook, finished size is about 17.5 inches x 18 inches.
With sport weight yarn: (181 yards) and a size US G hook, finished size is about 20 inches x 20.5 inches.
With worsted weight yarn: (206 yards) and a size US I hook, finished size is about 22.5 inches x 23 inches.

Gauge:
With size 5 thread: 5 squares = 1.4 inches, 5 rows = 1.6 inches
With size 10 thread: 5 squares = 1.2 inches, 5 rows = 1.3 inches
With size 20 thread: 5 squares = 1.1 inches, 5 rows = 1.2 inches
With size 30 thread: 5 squares = 1 inch, 5 rows = 1.1 inches
With fingering/baby weight yarn: 5 squares = 3.5 inch, 5 rows = 3.6 inches
With sport weight yarn: 5 squares = 4 inch, 5 rows = 4.1 inches
With worsted weight yarn: 5 squares = 4.5 inch, 5 rows = 4.6 inches

Basics in How to Do Filet Crochet, here: http://crochet.about.com/library/weekly/aa050298.htm

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