Some items require a higher "Repair Station Level" to craft. This refers to your Workbench. Below are the items you must build and the materials required to unlock them. Level 2 ⭐⭐ Chopping Block: Wood, Flint Level 3 ⭐⭐⭐ Tanning Rack: Flint, Leather Scraps, Deer Hide Level 4 ⭐⭐⭐⭐ Adze: Fine Wood, Bronze Level 5 ⭐⭐⭐⭐⭐ Tool Shelf: Iron, Fine Wood, Obsidian