The Iron Capped Wooden Wand is the most basic wand in Thaumcraft 4. It does not require research, Vis, or alternate crafting methods to create.
The Iron Capped Wooden Wand has a Vis pool of 25 vis per aspect, and consumes Vis at 110% cost. It does not have a means of regenerating aspects on its own.
The Iron Capped Wooden Wand is considered too primitive for use in certain forms of crafting or spellcasting, and its low capacity makes it unsuitable for anything beyond the most basic Thaumaturgy. Additionally, it does not have safeguards against completely draining aspects from Aura Nodes even with the appropriate research. However, it can still be used to create a Thaumonomicon or Arcane Worktable.
The casting wand is your most basic, but also your most important tool. It is what you use to craft objects, activate blocks like the crucible, and countless other tasks. The most basic wand stores a very limited amount of magical energy (called vis) that it uses to perform its tasks. The replenish the energy in a wand, you must right-click and hold to draw vis from an aura node. While holding a wand you will see a indicator on the top left of the screen that shows how much vis is stored within the wand.
Holding shift will display exact numbers held by the wand and any possible discounts you have to performing magical tasks. Wands are always constructed by the combination of a rod and two end-caps. As you progress with your studies, you are sure you will discover different materials that you can use to craft rods and caps to make powerful wands. Only the basic wand can be put together in a normal crafting table. All other wands require the Arcane Workbench and will cost vis to construct. The basic wand is constructed from mundane wood and iron, both of which make poor materials for working magic.