A friction welding machine is a mechanism that could use to carry out the welding process by creating friction on the surface to join. Frictional movement is created by pressing between two surfaces that have relative movement between one surface and another. The friction that occurs continuously would increase the temperature on both surfaces. The existence of a pressing process on a frictional surface will cause an increase in temperature to the melting point of the material. As a result, the frictional surface will form a metallurgical bond between the workpieces. This paper would describe the process of designing a friction welding machine for laboratory applications. A friction welding machine designed with a rotary type friction model, the machine dimensions of (1220 × 450 × 980) mm. The driving motor uses a single-phase electric motor, 1400 rpm rotation, and 1.5 hp power. The power transmission system uses a belt pulley; the braking system uses a hydraulic disk brake, which is driven by an SC 32 × 50 pneumatic cylinder with a working pressure of 0.1–0.9 MPa. The shape of the workpiece that could be welded is the cylindrical profile with a diameter of 10 mm and 8 mm, carried out by a pneumatic cylinder an SC 63 × 200 with a working pressure of 0.1–0.9 MPa. Visual test results produce relatively good welded joints for steel materials with diameters of 10 mm and 8 mm, respectively friction times of 45 and 40 seconds. While aluminum materials with diameters of 10 mm and 8 mm, respectively at friction times of 25 and 20 seconds. [ABSTRACT FROM AUTHOR]