Make wooden mold by precision computerize analysis, causes the intensity of sand mold and bores reach the excellent condition. So, the cast iron quality is stable, reduced the thermal deformation and the internal stress.
Structure assembly surface processing by precision hand scraping, increases the structure rigidity and the stability it may promote the processing accuracy.
To prevent the accumulated error, when assembly process assisted by the precision instrument in each process , enable to reach the best accuracy within specification.
The whole machine test and laser calibration according to standards ISO, DIN, JIS, CNS...
Geometry accuracy :
Straightness, perpendicularity, flatness by laser gauging and circularity by ball-bar test.