Household 3D printers would reduce the environmental harms of consuming  The more is produced by 3D printing, the better: it makes consuming much more environmentally friendly. They involve less transportation costs, no large scale factories, and by involving additive manufacturing, they can use as little as only a tenth of the material that subtractive manufacturing would require.18 When households, and not only companies, have access to 3D printers, companies will no longer have to move products around the world, but can sell electronic blueprints instead. Furthermore, things are only actually produced after they have been purchased, reducing waste even more.  [18] “Print me a Stradivarius”, The Economist. 10 February 2011.