Ultraviolet-sensitive liquid resins (photopolymers) are instantly cured when activated by a UV laser. Parts are post-processed with additional UV and thermal treatments when necessary. ***Also known as SLA
Stereolithography is an extremely fast and highly accurate process used most commonly for form and fit prototypes, master patterns, and large concept models. The combination of speed and design freedom offered by stereolithography enables rapid iteration for new product development.
Stereolithography at Midwest Prototyping
3D Systems, RPS
Max Build Area:
31 in. x 31 in. x 23 in.
1 – 2 Days
3D Systems Accura: 25, 60, ABS Black, Xtreme, Xtreme White 200
DSM Somos®: 8120, EvoLVe, PerFORM, Taurus, Waterclear Ultra 10122, Watershed Black, Watershed XC 11122
+/- .005 in. for the first inch and +/- .0015 in. for each additional inch
Normal resolution layer thickness is .004 in. and minimum feature size is .012 in. High resolution layer thickness is .002 in. and minimum feature size is .006 in. (feature size is dependent on geometry).
Do you have a question about your design or materials that would fit your project? Email one of our Solutions Managers.
Stereolithography Finishing Levels
Supports removed and support faces lightly sanded
Standard finish, supported surfaces appearing dull and non-supported surfaces appearing glossy. Parts will have visible layer lines.
Supports removed, support faces lightly sanded, and entire part bead blasted
Even surface finish, gloss removed from non-supported surfaces to create a more consistent finish. Parts will have visible layer lines.
Supports removed, support faces lightly sanded, cosmetic surfaces sanded to 180 grit, and entire part bead blasted
Functional finish, removes some layer lines. Parts have a light texture from sanding.
Supports removed, support surfaces lightly sanded, cosmetic surfaces sanded to 320 grit, and entire part bead blasted
Show quality finish, removes layer lines from cosmetic surfaces. This finish is recommended for priming, painting, and urethane mold masters.
Supports removed, support surfaces lightly sanded, cosmetic surfaces wet sanded to 600 grit
Highest quality finish, recommended only for plating and optically clear parts.