Development of Post-process for Improving the Surface Roughness of Stereolithography parts - Using Wax Coating and Grinding Post-process -

RP part 표면정도 향상을 위한 후처리 공정 개발 -왁스 코팅과 연삭 후처리 공정 이용-

SL(Stereolithography) part is made by piling up thin layers which causes the stair stepping effect at the surface of SL parts. This effect brings about excessive surface roughness and requires additional post-process finishing such as abrasive techniques that are detrimental to part geometry and time consuming. Hence a wax coating and grinding post-process is proposed to improve the surface quality of SL part. The wax that has suitable properties for the proposed post-process is coated all over the part surface. By grinding the thin layer of coated on the SL part only, the surface roughness can be improved without any damage on the part. From the experimental results, This approach is considered to be very practical fur die casting with RT(Rapid Tooling) techniques.