The Geeetech A20M 3D printer boasts a dual filament input, single output extruder for mixed colour 3D printing, with a build volume of 255*255*255mm and 0.1mm accuracy. This ensures steady, smooth prints with crisp edges and robust structures. The filament detector and resumption capability enhances user experience, while the extruder minimizes clogging and leakage. The extruder cover and motor feature 360° ventilation and a 3:1 speed ratio gear train, respectively, providing improved heat dissipation and printing performance. The V-shaped wheels and rails are made from wear-resistant aluminium and reduce printing noise for a quieter 3D printing experience.