PolymerSLATRL 9 · Mature

Vat Photopolymerization SLA DLP

Dominant for dental and medical model production. Also strong for jewelry, consumer products, and precision engineering prototypes. Formlabs made professional SLA accessible; MSLA drives cost reduction.

Mature

TRL 9

confidence 88%

How it works

Photopolymer resin is selectively cured by light (UV laser for SLA; UV projector for DLP; LCD array for MSLA). Each layer is cured by the light source; parts are post-washed and post-cured. Offers the finest resolution of any polymer AM process.

Also known as: stereolithography, resin printing, MSLA (masked SLA)

Strengths

01Finest surface finish and resolution of any polymer AM
02Excellent for dental, jewelry, and precision visual models
03Fast turnaround for small, detailed parts
04Wide resin library including biocompatible and castable
05Desktop professional machines very accessible (Formlabs)

Bottlenecks

01Resins are brittle vs engineering thermoplastics
02Parts degrade in UV over time if not properly post-cured
03Post-processing (wash + cure) required
04Resin materials not as mechanically versatile as filament or powder

Key Applications

01Dental models, surgical guides, clear aligner base models (Align Technology)
02Jewelry investment casting patterns
03Consumer electronics visual prototypes
04Hearing aid shells
05Medical device prototyping

Key Suppliers

• Formlabs — Form 4, Form 3L• market leader in professional SLA• 3D Systems (SLA/Figure 4) — Pioneer• Figure 4 production platform• EnvisionTEC / Desktop Health — Dental and medical DLP• Carbon (CLIP/DLS) — Continuous DLS process• dental production at scale• Nexa3D — LSPc ultrafast resin• production focus• Photocentric — LCD-based mass production resin systems

Trajectory 2025–2035

Continued dominance in dental and medical. Engineering resins improving to approach injection-molded properties. Speed increasing (Carbon, Nexa3D). Bioprinting applications expanding. Ceramics and composite-filled resins growing for functional parts.

RELRelated technologies

TRL 5 · 70% confidence

Continuous Fiber Composites

Used for strong tooling, fixtures, and selected end-use parts.

TRL 7 · 70% confidence

FDM FFF

Dominant low-cost process; industrial variants support tooling, fixtures, jigs, and end-use polymer parts.

TRL 5 · 70% confidence

Large Format AM LFAM

Used for molds, patterns, tooling, construction-scale polymer/composite structures.

TRL 9 · 90% confidence

Material Extrusion FDM FFF

Most widely deployed polymer AM process. Strong across prototyping, tooling, and selective production. Bambu Lab and Prusa driving rapid desktop performance improvements 2022–2025.

SOURCES & CITATIONSMethodology →

01
Formlabs materials guide
confidence 88%
02
Wohlers Report 2024
confidence 88%

Cite this page

APA

AM Roadmap. (2026). Vat Photopolymerization SLA DLP. AM Roadmap (v0.4.2-fixes-deployed). Retrieved 2026-05-17, from https://amroadmap.com/technologies/polymer-vat-photopolymerization-sla-dlp

BibTeX

@misc{amroadmap_vat_photopolymerization_sla_dlp_2026,
  title  = {Vat Photopolymerization SLA DLP},
  author = {{AM Roadmap}},
  year   = {2026},
  url    = {https://amroadmap.com/technologies/polymer-vat-photopolymerization-sla-dlp},
  note   = {AM Roadmap dataset v0.4.2-fixes-deployed, accessed 2026-05-17}
}

Canonical URL: https://amroadmap.com/technologies/polymer-vat-photopolymerization-sla-dlp