Manufacturing industry that is developing today is very rapid, one of which is rapid prototyping. Rapid prototyping is a technique for forming components in a fast and precise way, one of which is a 3D printer. The purpose of making this extruder filament machine is that in the future there is an alternative to processing plastic pellets besides that with this machine the cost of using a 3D printer will be even cheaper. In this tool a trial was carried out with nylon 6 material with a temperature at 180 ° bar and a temperature at nozzle 200 ° C. Filament extruder machine produces a filament with a diameter in accordance with the diameter of the nozzle / die. The material used is thermoplastic in the form of granules (pellets) can also use used plastic. Band heater functions as a heater to melt the material (thermoplastic) which is controlled at temperature control. Barell and screw functions to push raw material to the nozzle / die. Screw consists of three zones, namely the bait, melting and transition zones. In this machine, the nozzle / die used has a diameter of 0.98 mm made of brass, with a screw diameter of 25 mm using stainless steel seamles, the screw uses stainless steel ROD 304 with a diameter of 20.5 mm. Stainless steel was chosen because it has characteristics that are resistant to high temperatures and resistant to corrosion. This machine uses an electric motor with a power of 0.5 HP with a speed of 1400 rpm reduced with a 1:60 gearbox. Heater amounted to 4 with 220 v power and a voltage of 150 watts. From the results of trials conducted a change in size between the size of the nozzle / die 0.98 mm with a filament result of 1.13 mm. When seeing the operation of the machine, the fabrication and testing process was successful