Bending is sometimes used to achieve a design.[1] If a plant's tissue is bent at too sharp an angle it may break, which can be mostly avoided by un-localizing the bend. This is achieved by making small bends along the curve of the tree. Bends are then held in place for several years until their form is permanently cast.[17]:80 The tree's rate of growth determines the time necessary to overcome its resistance to the initial bending.[2]:178 The work of bending and securing in this way might be accomplished in an hour or perhaps in an afternoon depending on the design.[3]