Correct. Blastificer builds actually build upon Blaster Mage builds who use Rods of Quickening, Empowerment, and feats like Sudden Maximize, etc.
BUT...they need time to prepare, and they can only do this so many times a day.
An Empowered Wand of Scorching Ray is a nice base. She's being nice by only using Twin Spell. If she added Quicken to the Mix, she could shoot that bolt off twice a round...Twinned! And then you get really silly and add in things like Repeat Spell and Energy Admixture to get 3 and 4 times the base dmg going.
12d6 +50%, +36d6, twice a round, anyone?
Also note, if you apply a strict interpretation of metamagic feats, she is NOT Twinning an empowered Scorching Ray...she's Twinning a Scorching Ray, that INDEPENDENTLY is Empowered.
Thus, that Spell dmg is 12d6, +12d6, +50% of 12d6....total dmg is 30d6, with six touch attacks and six SR checks.
For those of you who think that's balanced, well...
For the exact same cost, she can get a Wand of Energy Orb (any Element, or Force, 4th level spell, Complete Arcane) for the exact same cost. Dmg is 1d6 or 1d8 per caster level, ranged touch...and it ignores SR entirely.
THAT is the standard Blastificer weapon...SR isn't a consideration, since wands have low caster levels.
There is also the Dual Wand Wielder feat in Complete Arcane (needs TWF, but can use a wand in off hand for 2 charges instead of one) or you can take the Cannith Wand Adept class to dual wield wands (although the +CWA class level to wand caster level and DC is worth it right there).
Lastly, an Artificer only gets so many infusions a day, it takes time to prepare all of these, and they will only last for one encounter. The wands also have to get made ahead of time.
I think the Build That did the most was a Fire Energy Orb wand, sticking a ruby on the end of it, with +5 levels for a caster level of 16. Then you Quicken, Empower, Twin, Repeat, and Admixture it. Total buff time...10 rounds, 10 infusions level 3 or higher.
16d8, +16d8, +16d8, +16d8 (Acid), +50% of 16d8. Twice a round. 144d8 dmg. If you dual wield and have the infusions (it would take pretty much all of them level 3+), you are cranking out 288d8 of dmg per round at the cost of 6 charges on two wands. By going down to a 288d6, you can make most of that dmg force dmg, the other half something like Acid, usually.
224d6 of force dmg is ~784 points or so. Line up the dragons...if you have time to prepare. Of course, you must be about 20th level for all the feats to do this, but still, it IS impressive what a munchkin can pull off.
Not bad for 6 charges, or 3k of gold, aye?
==Aelryinth