It is safe to state that Rapid Prototyping (RP) is here to stay. This paper examines the problems encountered in direct casting of those RP resins produced by light-sensitive resins that consistently contribute to defects in the cast products. The alloys used in this study have melting ranges that do not exceed 1200 degrees C (2192 degrees F). We will examine the thermal and physical properties of both the RP material and investment utilized. In the summary we will suggest cost-effective procedures and equipment that will assist individual casting installations to customize procedures and burnout programs for their particular casting requirements.

Author: Alan S. (Andy) Andrews