The extruder is designed specifically for use with MakerBot PLA, a new plastic material based on corn, that Bre Pettis claims wont expand when exposed to the heat -- which means it wont contract when it cools, leading to smoother printed objects and less cracking.
Section 10A(a) of the Exchange Act requires each audit to include procedures designed to provide reasonable assurance of detecting illegal acts that would have a direct and material effect on the determination of financial statement amounts.
There were servants to address one's every material need, dinner in white tie and lavish gowns, and rules designed to keep the upper crust on top and the lower classes in their place.