 MakerBot printers print with polylactic acid (PLA), acrylonitrile butadiene styrene (ABS), high-density polyethylene (HDPE), and polyvinyl alcohol (PVA).The Cupcake CNC was introduced in April 2009 as a rapid prototyping machine.The source files needed to build the devices were put on Thingiverse, allowing anyone to make one from scratch.