Thinking about some spells... How do these look?
Object of Miniscule Proportions [MuTe 25]
. . . R: Touch, D: Concentration, T: Individual
This spell shrinks the touched object to 1/4000th its volume and weight (1/16 length in each dimension).
. . . Base 4, +1 Touch, +1 Concentration, +2 metals/gems, +1 smaller
I based this off of Object of Increased Size (ArM5 p.154), noting that consistently when there are examples shrinking goes down by double the factor the increasing goes up. So Base 4 is 1/64 the volume. I added another magnitude to do this again, for 1/4048 of the volume. I wanted to include gold, gemstones, etc., so I added 2 magnitudes for that. Meanwhile, I set its duration to Concentration.
I'm also considering the same thing for weapons, but I haven't been able to figure out if the +2 for metal is needed. I would have thought so, but Object of Increased Size doesn't do that. I would make a spell for weapons T: Group.
The Phantom Armorer [ReTe(An,He) 30]
. . . R: Touch, D: Momentary, T: Group
The magus transforms iron bars (or other ready iron), wood, leather, etc. into a crafted and formed weapon or armor, as if a craftsman had worked to the magus’s instructions. The magus must succeed in a Perception + Finesse roll substituting for the smith’s Craft: Armorer or Craft: Weaponsmith roll, with +3 to any Ease Factor. Failure means that the device also fails to function; a botch means it has hidden flaws.
. . . Base 4 (metal/wood), +1 Touch, +2 Group, +2 requisites, +1 flexibility
I based this off of The Phantom Blacksmith (Cov p.51). I figured there are almost always materials of plant and animal origins in weapons and armor, especially armor. I'm not sure if I have to keep the +1 for flexibility. I may well pick up The Phantom Blacksmith, too - great for horseshoes, lab tools, farm implements, etc.