For a list of what can be hand crafted, see the Hand Craftables category.
Hand crafting can done anywhere using the Hand Craft window. The window is opened by clicking the hand craft button on the Gear (F4) window.
The dropdown-box contains all recipes available for hand crafting. Some items may have multiple entries if it can be made using different components. For example: Hammers can be made using log, lumber or stone.
The first box lists all the components that will be consumed when crafting the item, the second box list all the tools that are required. All components and tools must be present in the inventory. Tools do take durability damage when used.
The "Make" button will be grayed out if any components or tools are missing.
Factory Hand Crafting
While standing on the plot of a factory building, it is possible to hand craft any item the factory can manufacture. All recipes cost ten times less than when produced by the factory. The only real limit on what can and cannot be made this way, is a question of rather or not all the components can fit in the inventory together.
All crafting recipes only produce one of the item. This includes minting cronodollars, which only yield 1¢.