Thaumaturgy in Thaumcraft refers to all dealings with wands and related devices, including most dealings with vis.
“The beginning player may be frustrated with the few uses for wands. Using them for crafting and...Wand foci
“Wand Caps are one of the two main components of making wands (including staves and scepters...Wand Caps
“The Amulet itself can only be recharged in two ways: By placing it in a Recharge Pedestal, or by...Amulet of Vis Storage