Linen ThreadPick it up to discover it.
Refined EitrPick it up to discover it.
Scale HidePick it up to discover it.
Galdr TableDiscover and use at level 1 or higher.
Discovery is separate from having enough materials to craft. Check shelter, fire, placement, and station access in-game. This checklist cannot diagnose broken mods or save files. Each alternative recipe is listed separately.