There’s a significant cost:quality/size trade off when dealing with home 3D printers. Even the cheapest commercial-grade printers cost around $15,000 USD. Alternatives such as the aforementioned MakerBot CupCake CNC ($750 + materials), are cheaper but the quality (resolution) of the 3D print may be unsuitable for practical purposes and limited to a relatively small build envelope. The surface of a part may need to be finished with resin or putty to smooth out the lines that form as the part is printed layer by layer; larger parts need to be broken up into smaller pieces for printing; and smaller, fine detail parts may be too thin or flimsy to print properly at all… For these reasons, artists will probably skip the at-home printers for now, but roboticists may want to look into them.
Via Plastic Pals