The Blank Lesser Focus is an item added by Thaumcraft 6. It is designed to be used in a Caster's Gauntlet and has a complexity cap of 15 points. Effects can be added to it or modified by using a Focal Manipulator.
— Thaumonomicon, Basic Auromancy (Stage 1)
I have the casting glove, but now I need to craft the foci. The old scrolls aren't very clear on how to go about this, so I will need to find my own way.
I have played with the idea of assembling a focus from crystals and then using vis to bind them together. My initial experiments have been failures... explosive failures.
I think the answer I seek lies with an alchemical process.
Using an ordo crystal as a core I might be able to leverage its ordered structure to grow a focus around it. While this is happening it should absorb praecantatio and auram essentia.
The result should hopefully be a crystal focus able to absorb and manipulate vis.
— Thaumonomicon, Basic Auromancy (Stage 2)
Using Alchemy to create the focus was indeed the path to success. The focus is stable and clear - now I simply need to imprint the proper patterns into it. For this I will need a Focal Manipulator
I have already drawn up plans for a Focal Manipulator. The way it functions is similar to an arcane workbench in many ways, but instead of using vis to craft items it instead imprints patterns into the focus crystal.
I must also design the patterns that I will need to imprint. I have an idea for a pattern to create flame, but I need to do some more research.