1 F is the force of attraction between them. 2  G is a constant that is 6.67259 x 10-11 m3/kg s2. 3  M1 and M2 are the two masses that are attracting each other.  R is the distance separating the two objects.
A makerspace is a community center that provides technology, manufacturing equipment and educational opportunities to the public.
Shapeways is a Dutch-founded, New York-based 3D printing marketplace and service, startup company. Users design and upload 3D printable files, and Shapeways prints the objects for them or others. Users can have objects printed in over 55 materials and finishes, these include: plastics, precious metals, steel and food-safe ceramics, which were discontinued and have been replaced by porcelain materials. As of June 20, 2012, Shapeways printed and sold more than one million user-created objects. On October 19, 2012 Shapeways opened a new '3-D printing factory' in Queens, New York that could house 50 industrial printers and produce millions of consumer-designed products a year.