2 Precision cutting tools cut the bamboo into long strips. An accuracy of about one one-thousandth of an inch (0.03 mm) in the width of the strips is necessary to ensure that the strips will fit together properly. Six strips are usually used to make a hexagonal blank. Some manufacturers use five strips to make a pentagonal blank. The strips are glued together under heavy pressure. Strong thread is wrapped around the strips to maintain pressure at the points where they meet. The glue is allowed to dry, the string is removed, and the blank is lightly sanded to remove excess glue and to provide a smooth surface.
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