Use a damaged chitin with a hammer on an anvil to receive chitin scraps. The number of scraps received depends on your smithing level.
Uses:
Used to repair Drygore weapons.
Notes:
At level 60 Smithing, 21 scraps are received for breaking down damaged chitin. This increases by 0.5 for each additional Smithing level past 60, and is rounded down. For example a player with 99 Smithing will obtain 40 chitin scraps for breaking down one damaged chitin.