Raid beaver dams for Cementing Paste, but clear their inventory completely and remove the dam afterward so it can respawn; be cautious of nearby beavers. A tamed Beelzebufo can harvest insects in swamp caves or swamps for paste, while a Megatherium can help gather chitin. You can also craft it from chitin and stone, with a chemistry bench being more efficient, or produce it passively by keeping Achatina snails.