The D-D3 system is the third generation of direct-connected scraper systems consisting of two separate scraper heads. Each scraper head is driven directly by a high precision stepper motor. Conventional pneumatic or timing belt driven scraper heads are no longer able to meet the accuracy requirements of the latest SMT process. With the D-D3 system, the blade pressure can be accurately measured and controlled. The “self-balancing scraper” can automatically adapt to the surface of the stencil, so that the solder paste can be printed on the PCB accurately and evenly. The surface of the solder paste is also smoother and the effect of the mounting is improved.