Material family
Standard, clear, tough, flexible, castable, or specialty resin routes should match the actual test or appearance goal. Specific resin grade is confirmed during RFQ.
SLA Printing 서비스
for Resin Prototypes
DFocus provides SLA printing services for smooth resin prototypes, clear models, master patterns, and fine-detail parts. Upload STL, STEP, resin target, finish expectation, quantity, and delivery country so engineering can confirm process fit before quotation.
- Ultra-Fine Resolution up to 25 microns
- Smooth Surface Finish (Ra 1.6-3.2)
- Wide Range of 엔지니어링 Resins
25μm resolution. Smooth surface Ra 1.6-3.2. 20+ resins.
Lead time confirmed after RFQ
SLA quote checklist
What to send for SLA printing services
For a reliable SLA quote, send STL or STEP files, resin or appearance target, required surface finish, quantity, tolerance-critical features, assembly notes, and delivery country.
CAD filesSTL, STEP, drawings, or reference photos.
Material targetClear, white, tough, flexible, or castable resin.
견적 scopeQuantity, finish, tolerance, packing, and shipment needs.
Quality scope
By RFQ
10+
SLA Printers
20+
Resin 소재
5k+
Parts Monthly
Manufacturing evidence available
FAI reportsCMM checksMaterial certsProcess photosExport packing proof
What is SLA 3D 프린팅?
SLA (Stereolithography) is the original 3D printing technology, invented by Chuck Hull in 1984. It uses a UV laser to cure liquid photopolymer resin layer by layer, creating highly detailed and accurate parts with smooth surfaces.
Unlike FDM printing, SLA produces parts with virtually no visible layer lines, making it ideal for visual prototypes, master patterns for casting, and applications requiring fine details.
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Why Choose SLA Printing?
Discover the advantages of stereolithography for your next project.
High Resolution
Layer thickness from 25-100 microns for extremely fine details and sharp edges.
Smooth Surface
Near-injection-mold quality surface finish with minimal post-processing.
Tight Tolerances
Dimensional accuracy of By drawing for precision fit and assembly.
Complex Geometry
Print intricate designs with thin walls and fine features not possible with other methods.
SLA Resin 소재
Choose resin families by visual target, functional load, transparency, heat exposure, and downstream process. Final resin grade is confirmed during engineer review, not assumed from a generic SLA label.
Standard Resins
Common choice for appearance prototypes, concept models, and show-and-tell review parts.
- White, Black, Grey, Clear
- High detail and smooth finish
- Cost-effective prototyping
엔지니어링 Resins
Used when the buyer needs stronger handling, snap-fit review, or limited functional checks before moving to CNC or tooling.
- Tough, Durable, Flexible
- High-heat resin options reviewed by use case
- ABS-like or PP-like behavior depends on resin family
Specialty Resins
Used for clear review models, castable masters, dental or fit-check applications, or process-specific samples when the resin route is agreed first.
- Castable for jewelry/dental
- Ceramic-filled composites
- Specialty grades reviewed by RFQ
Common Applications
Visual Prototypes
Presentation models, design reviews, and client approvals with exceptional detail.
Master Patterns
High-quality masters for urethane casting and silicone molding.
의료 & Dental Development
Dental models, development fixtures, and non-implant prototype parts with material suitability confirmed during RFQ.
엔지니어링 quote scope
Material, wall thickness, finish, inspection, and timing should be quoted together
SLA buyers usually need more than a fast print. The RFQ should define resin family, wall-risk areas, tolerance-critical features, post-processing, inspection evidence, and export handoff so the quote matches the real validation plan.
Wall thickness and detail planning
Thin walls, long unsupported spans, small holes, snap tabs, sealing edges, and cosmetic clear faces need CAD review before quote. Mark the critical areas on the drawing.
Tolerance strategy
Do not assume one blanket SLA tolerance for every resin and part size. Call out datum features, hole positions, mating faces, and post-machined areas that need measurement evidence.
표면 마감ing
Support removal, sanding, primer, paint, clear coating, bonding, and master-pattern preparation affect appearance, seam risk, and schedule. Finish scope belongs in the RFQ, not after approval.
Inspection and documents
Visual check is common. Dimensional report, CMM, FAI, finish approval sheet, or packing proof should be requested only when they matter to the project gate.
Lead time and handoff
Print time is only one step. Orientation review, washing, post-cure, support removal, finish, inspection, and export packing all influence the written schedule.
Project workflow evidence
Use a four-step approval path for SLA projects
- 1. RFQ package: CAD, resin target, finish, quantity, destination, and critical dimensions.
- 2. Engineer review: confirm print orientation risk, wall/detail concerns, post-processing route, and whether measurement evidence is needed.
- 3. Print and finish: produce the agreed sample route, then wash, cure, remove supports, and complete any approved cosmetic work.
- 4. Inspection and handoff: release only the agreed photos, reports, packing checks, and shipment handoff records.
Evidence links
- Quality proof and inspection documents
When to ask for CMM, FAI, finish approval, packing proof, and sample reports.
- Sample documentation package
Representative document menu with RFQ-only boundaries.
- Sample finish approval sheet
Useful for cosmetic resin parts, clear models, and color or texture approval.
Verified Precision
Dimensional checks, clear-part review, and any report format are scoped during RFQ. SLA tolerance depends on part size, orientation, wall condition, post-cure, and finish, so critical dimensions should be marked on the drawing instead of assumed from a blanket shop number.
By drawingCritical features
By RFQInspection Scope
Precision
Process-fit review
Inspection
Reports by RFQ
Documented
QC by RFQ
Finish
Post-finish by RFQ
Related routes
Compare adjacent prototype-to-production routes
엔지니어링 buyers often move between SLA, SLS, CNC machining, rapid tooling, and low-volume production inside the same program. Use these context links when the RFQ needs a material, tolerance, tooling, or bridge-volume comparison.
SLA printing
Smooth resin prototypes, clear models, and master patterns.
SLS printing
Nylon functional prototypes and geometry that benefits from powder-bed support.
CNC machining
Production-grade metals or plastics, machined datums, and tighter critical features.
Rapid tooling
Prototype molds, T1 samples, and molded material validation before production tooling.
소량 생산
Bridge quantities when the design is moving from prototype into repeatable batches.
SLA Printing FAQ
What is the difference between SLA and FDM?
SLA uses a laser to cure liquid resin, producing smoother surfaces and finer details than FDM (which extrudes melted plastic). SLA is better for visual prototypes and precision parts, while FDM is more economical for larger, functional parts.
What is the maximum part size for SLA printing?
Maximum build size depends on printer route, resin, orientation, and post-processing risk. Larger parts may be split and bonded when the seam position, cosmetics, and strength expectations are reviewed during RFQ.
Are SLA printed parts waterproof?
Some SLA parts can be evaluated for short-term fluid or sealing checks, but long-term water exposure, fluid compatibility, and aging depend on resin selection, wall design, cure condition, and post-processing. State the actual use case during RFQ so engineering can confirm whether SLA is appropriate.
Can SLA parts be painted or plated?
Absolutely! SLA parts accept paint, chrome plating, and other finishes exceptionally well due to their smooth surface. We offer various finishing options including prime, paint, and hydrographic printing.
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