That's a new item's type in Alpha 3.5x. You may need to do something to gain one and by using it, learn a new crafting recipe.
“Learn to craft the Small Planter Box with the Wooden Board, Soil, Animal Feces. Given to the...Small Planter Box (Book)
“Learn to craft the Red Devils with the Jet Tube, Manganese Steel Bar, Gear. Can be obtained by...Red Devils (Book)
“Learn to craft the Safety Box with Manganese Steel Bar, Steel Plate, and Copper Bar. The Safety...Safety Box (Book)
“Learn to craft an Umbrella with Spine, Copper Bars, and Fiber Cloth. Received as a reward from...Umbrella (Book)
“Learn to craft the Enhanced Iron Sword with the Iron Sword, Carbon Steel Bar, and Animal...Enhanced Iron Sword (Book)
“Learn to craft the Blade of Malice with the Enhanced Bronze Sword, Venom, and Mucus. It can be...Blade of Malice (Book)
“Learn to craft the Yellow Sapphire Necklace with the Topaz and Wild Cocoon. Ginger will mail you...Yellow Sapphire Necklace (Book)
Pages in category "Crafting Book"
The following 10 pages are in this category, out of 10 total.