palmer vector tiny

Sand grain segregation has been the subject of countless technical articles, research papers, video presentations, and discussion forums among foundrymen. It is the primary cause of problems, and the leading source of inconsistencies in the sand casting process. These inconsistencies can result in defects, as well as the additional expense of high resin consumption.


Anti-Segregation DiagramThis video and presentation (see Resource Center at right) will demonstrate why sand segregation can not be prevented, and why re-blending at the final point of use is required.  They also show how sand grain sizes segregate each time the sand is handled, and a practical method of re-blending the sand at the critical point when the mold or core is made.