Stereolithography
SLA Resin 3D Printing Service USA
High-resolution 8K/14K resin printing with 9 engineering resins: Standard, Tough, Flexible, Dental, Castable, High-Temp, ABS-Like, Clear, and Ceramic-filled. Surface quality and dimensional accuracy that rival injection molding.
Get Instant SLA QuoteSLA printing cures liquid resin with a UV laser, producing parts with surface quality and dimensional accuracy that rival injection molding. When your prototype needs to look and feel like the final product, SLA is the answer.
Layer Heights
0.025mm - 0.1mm
Tolerances
+/- 0.05mm
Max Build Size
145 x 145 x 185mm
Materials
Standard, Tough, Flexible, Dental
Surface Finish
Near injection-mold quality
Detail Resolution
50 microns
Frequently Asked Questions
What is SLA 3D printing?
SLA (Stereolithography) uses a UV laser to cure liquid photopolymer resin layer by layer. It produces parts with fine detail, smooth surfaces, and tight tolerances that FDM cannot match. Best for visual prototypes, dental models, and parts that need isotropic mechanical properties.
How does SLA compare to FDM?
SLA produces finer details (50 micron resolution vs 200 micron for FDM), smoother surfaces, and tighter tolerances (+/- 0.05mm vs +/- 0.2mm). FDM offers a wider material selection, larger build volumes, and lower per-part cost. Choose SLA when surface quality and precision matter most.
Are SLA parts strong enough for functional use?
Tough Resin produces parts with ABS-like mechanical properties suitable for functional testing, snap fits, and short-run production. Standard Resin is primarily for visual prototyping. We help you choose the right resin for your application.
What is the maximum SLA part size?
Our standard SLA build volume is 192 x 120 x 200 mm. Larger parts can be split and bonded, or routed to our large-format SLA machines (335 x 200 x 300 mm) on request. SLA prints generally favor smaller, high-detail geometries.
How long do SLA parts last?
Most SLA resins are not UV-stable and will yellow and become brittle after extended sunlight exposure. Expect 1-2 years indoors before noticeable degradation. For long-term outdoor use, we recommend an FDM material like ASA, or applying a UV-protective clear coat after printing.
Do SLA parts need post-curing?
Yes, every SLA part is washed in isopropyl alcohol and UV-cured in our post-cure ovens to reach final mechanical properties. This is included in the standard turnaround time and price.
What surface finish should I expect?
SLA produces a near-injection-molded surface finish straight off the printer. Support marks on the bottom face are sanded by default. Mirror-polish, paint, and dye finishes are available as add-ons at quote time.
Can SLA parts be used for casting?
Yes. Our Castable Wax resin burns out cleanly for jewelry and small-batch investment casting, leaving zero ash. We also print SLA masters for silicone molding and urethane casting.
Is the dental resin biocompatible?
Yes. Our dental resin is ISO 10993-1 / ISO 7405 certified for short-term mucosal contact (Class IIa medical device), suitable for surgical guides, splints, and orthodontic models. Send us your case files and we will route them through our certified workflow.