In a non-combat clan, you can usually get 4-5 per hour, in a regular SC game, its more like 3 per hour. Hammers and needles are the only tools you should really be using, as they're the only ones that can save you a considerable amount of money. If you can make more than 600k p/hr, then you should use that method instead of SC (unless you enjoy playing it). You would probably make more money doing double nats than the amount you save doing SC (possibly the same). I used SC needles 92-99 crafting and they worked very well (I'm not very wealthy and cant make 600k+ per hour). I saved about 20m of the total cost, which is alot to me :).