You might want to know that the age old printer scam of charging more after the purchase then you ever hoped to spend on secondary things is still in effect in the 3D age.
However, this professor got tired of spending the big dollars and came up with a goop recipe of his own that is as cheap as 1/50th the price of the goop they sell to fabricate 3D items at the printer company.
http://www.sciencedaily.com/releases/2009/03/090331153010.htm
Not sure how to do links in the new system... please forgive if it doesn't appear as a link.
