Buy OSRS Bolt of canvas
The Bolt of canvas is a members-only crafting item in Old School RuneScape. Its item ID is 31475. Players use it to build sails for their boats and to make the gem satchel. It is tradeable and noteable, but it cannot be equipped or stacked. It weighs 1 kg.
Players can make a bolt of canvas with level 39 Crafting. Weave 2 hemp yarn at a loom to get 1 bolt of canvas and 75 Crafting experience. The process takes 3 game ticks, which is 1.8 seconds. Handy looms sit at the South Falador Farm in Sarah's house, at the Museum Camp on Fossil Island, and just south of the Totem Fletching spot in Auburnvale.
Bolts of canvas are needed for teak, mahogany, and camphor mast and canvas sails. These sails fit the Raft, Skiff, and Sloop boat types, along with logs and nails. The item is also used to make the gem satchel, which needs 1 bolt of canvas, 1 silk, 1 gem pouch, and a needle and thread or a costume needle. Buy bolts of canvas to skip the weaving and get right to building your boat.