Disclosed are a three-dimensional printer of a fused deposition modeling and software setting values thereof, which blocks transmitting calories of a nozzle upwards and simultaneously heats a lower aluminum output plate at a high temperature to locally transfer heat in a sandwich form to where an output proceeds, such that it is possible to realize miniaturization of engineering plastic printing at low energy, prevent the shrinkage of a printed object, and maximize adhesive strength between layers, wherein the three-dimensional printer is further provided with a nozzle made of SUS having excellent heat resistance to use an engineering plastic filament having a high melting temperature and obtain optimal quality within a numerical range of predefined software setting values, wherein the output plate is provided with a hard anodized aluminum plate so that both commodity plastic and engineering plastic material can be used without a need to attach an additional special sheet.