A three-dimensional printer is disclosed. The printer includes a frame, a feeding mechanism supporting a polymer filament and a driving mechanism fixed on the frame. The driving mechanism is stationary. The printer also includes an extruder assembly coupled to the feeding mechanism and the driving mechanism. The ext...
[Class : 41] Providing Of Training; Entertainment And Education Services; Disseminating Information And Providing, Sponsoring And Hosting Seminars, Presentations And Discussion Groups And Providing Training In The Fields Of Personal Development, Career Development, Relationship Building, Training, Recruiting; Electronic Publishing Services For Others; Electronic And Online P...