Artisan Archive

I have a factory pumpong out (insert generic item here) by the hunfreds and i was under the impression that i was supposed to get crafting xp for factories. I crafted am item that gave me something like 40 pts of general grafting xp. i remembered that i could gain xp from factories and so made a scematic. After placing the schem in the factory and letting 40 or so units be produced i noticed that i made absolutely 0 xp. Am i doing something wrong? Is there an issue i am unaware of? thanx in advance. any help at all would be appreciated.

gavin