Chitin scraps

Chitin scraps are used to repair drygore weaponry, and may be obtained by using a damaged chitin on an anvil, awarding 10 Smithing experience per damaged chitin. Each damaged chitin gives 21-40 chitin scraps depending on the player's Smithing level. Damaged chitin is obtained as a 100% drop from all exiled kalphites except exiled kalphite workers.

100 scraps repair 1% of a mainhand weapon; thus 10,000 scraps are needed to repair the weapon at 0%. 50 scraps repair 1% of an off-hand weapon; thus 5,000 scraps are needed to repair the weapon at 0%. Alternatively, drygore weapons can be repaired for coins by Bob in Lumbridge or at the armour stand of a player-owned house.

Comparing using chitin scraps to an armour stand for repairing drygore weaponry: the Smithing level at which the cost is equal is ; thus, using chitin is cheaper for level Smithing and lower, and using an armour stand is cheaper for level  Smithing and higher.