Thank you for the replies. JAD, I like your spell and I used chummer to toss up my own version. It is restricted to just swords (though I may add an arsenal type version, IDK right now), but the Drain is lesser (chummer says F/2-1, though I think I'll move it to F/2 at minimum)and the weapon is an exact copy of the normal weapon, just with an added elemental effect. Though I think I will also add +1 to the damage and AP because the weapon is magical (thus in my mind, giving it infinite sharpness). So as an example, a summoned fire sword (using the normal sword stats from SR4A) will be (STR/2 +4) with an AP of -1, plus any secondary effects of having a sword made of fire (like cauterized wounds and possibly clothing set on fire). That is with the added damage and AP. Frankly I think it sounds decently balanced. I don't think there is any sword with a DV or AP high enough that adding +1 to both will break it. Please let me know what you think.
Summone [Elemental] [Melee Weapon]
Type: P ~ Range: T ~ Duration: S ~ DV: (F/2)
Developed by mages and mystic adepts who were tired of lugging around and smuggling their weapons, this spell creates a melee weapon out of any handy material. The weapon is an exact copy of the creators preferred weapon, though its magical nature gives it an additional +1 to damage and AP. The weapon is dispelled when the caster is disarmed, drops the weapon, or simply ends the spell (unconsciousness counts as ending the spell). The weapon cannot physically harm the caster in any way (outside of Drain).
Personally for physical image, I see a sword of whatever color with a pattern along the blade that suggests the element used to make it. Like a fire sword would be red (a darker crimson, again IMO), and the sword looked like it had flame decals along the blade, though more realistic. But really anyone can describe it as they want (so if you want a literal flaming sword of fire you can).