Pattern calls for Bedspread Weight Cotton thread.

In the booklet, under “Gauge” it says:

Gauge is not important; your snowflake can be a little larger or smaller without changing the overall effect.

Other supplies needed:
Tracing paper
Scissors
Waterproof marking pen
Waxed paper
Ironing board or blocking board
Rust-proof pins
Stiffening solution (listed in the “Finishing” section of the book itself)
2 small bowls
Nylon line for hanger