Charred Cogwheel Valheim 1.0.20
Charred Cogwheel is a crafting material that stacks to 10 in Valheim. It is used to build Catapult.
“This could be used for some clever machinery...”
The Charred Cogwheel is a Material. Its in-game description reads: "This could be used for some clever machinery..." Each one weighs 5, and you can carry a stack of up to 10. It cannot be teleported, so you have to carry it yourself if you want to move it between places.
The only use listed for it is building the Catapult.
Used to build
Other material items
Acorns, 
Amber, 
Amber Pearl, 
Ancient Bark, 
Ancient Coin, 
Ancient Metal, 
Ashlands Gourmet Bowl, 
Ashwood, 
Asksvin Bladder, 
Asksvin Hide, 
Asksvin Neck, 
Asksvin Pelvis.