SLA 3D Printing in India — 25µm Resolution, Delivered in 2–7 Days
Get instant quotes on SLA resin-printed parts with exceptional detail, accuracy, and surface quality. Partwork delivers high-precision stereolithography parts for prototyping, functional testing, and end-use applications - in as fast as 2 days.
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Overview
What is SLA 3D Printing?
SLA Printing Capabilities
Build Volume & Accuracy
- Standard Build Volume: 145mm × 145mm × 175mm
- Large Format Available: 300mm × 335mm × 200mm
- Layer Height: 25µm to 100µm
- XY Resolution: 140µm (standard), 75µm (high-res mode)
- Dimensional Accuracy: ±0.1mm or ±0.1% (whichever is greater)
- Minimum Wall Thickness: 0.4mm
- Minimum Feature Size: 0.2mm
Surface Finish & Quality
- As-printed surface finish: Ra 0.5-1.0µm
- Post-polished: Ra 0.2µm achievable (mirror-like)
- 10× smoother than standard FDM printing
- Near-injection-moulded quality on visible surfaces
- Fine detail reproduction: threads, text, lattices, undercuts
- Transparent parts: optical clarity up to 90% light transmission
- Consistent quality across full build volume
Supported Geometries
- Complex overhangs with thin support structures (0.4mm diameter)
- Internal channels and cavities
- Fine text and embossed logos (down to 0.5mm stroke width)
- Living hinges and snap-fit features
- Thin walls and lattice structures
- Threaded holes (M2 and above)
- Organic and freeform surfaces
Post-Processing Options
- Standard: IPA washing + UV post-cure (included)
- Support removal and base sanding (included)
- Fine sanding and polishing (Ra 0.2µm)
- Priming and painting (any RAL/Pantone color)
- Clear coating (gloss or matte)
- Dyeing for Standard and Tough resins
- Drilling and tapping for hardware inserts
Available SLA Resin Materials
1Standard Resin
2Clear / Transparent Resin
3Tough / ABS-like Resin
Quality Assurance
- File Analysis - Automated check for printability, wall thickness, and geometry errors
- Resin Certification - Certified photopolymer resins from qualified suppliers
- Machine Calibration - Daily laser calibration for consistent layer accuracy
- Print Monitoring - Real-time monitoring for delamination and layer failures
- IPA Wash Verification - Thorough cleaning to remove uncured resin
- UV Post-Cure Validation - Controlled post-cure cycle for full mechanical properties
- Dimensional Inspection - Key dimensions verified with digital calipers and CMM
- Visual Inspection - Surface quality, support marks, and clarity checked before dispatch
Lead Time & Delivery
Design Guidelines for SLA Printing
Follow these guidelines to get the best quality, accuracy, and cost efficiency from SLA printing
Automated Analysis
Our engineers review every file before printing - we'll flag any issues before production begins
When to Choose SLA 3D Printing
SLA is the Best Choice When
- Visual prototypes where surface quality matters
- Transparent or clear parts (lenses, light guides, covers)
- Fine details, sharp edges, and intricate geometries
- Parts that will be painted, photographed, or presented to clients
- Dental models, medical device prototypes
- Master patterns for silicone moulding or investment casting
- Small to medium parts requiring high accuracy (±0.1mm)
Consider FDM Instead When
- Large parts where surface finish is not critical
- Flexible or rubber-like parts (TPU materials)
- High-temperature applications (PC, PEEK)
- High strength load-bearing functional parts
- Large volumes at lower cost per part
- Thick structural components
Consider CNC Machining When
- Metal parts required
- Tight tolerances beyond ±0.1mm
- Isotropic strength critical in all directions
- End-use production parts with long service life
- High temperature or chemical resistance required
Why Choose Partwork for SLA 3D Printing?
Professional-Grade SLA Equipment
Industrial SLA printers delivering consistent 25µm resolution - not desktop hobbyist machines. Results you can present to clients with confidence.
Fastest Turnaround in India
Parts printed and dispatched in 2-3 days for standard orders. Same-day printing available for orders placed before 10 AM.
Transparent Instant Pricing
Upload your STL and get instant pricing based on volume, material, and finish. No manual quoting delays, no hidden costs.
Expert DFM Review
Every file is reviewed by our engineers before printing. We flag wall thickness issues, orientation problems, and geometry errors before production starts.
End-to-End Finishing
From raw print to fully painted, polished, and client-ready parts. Post-processing handled entirely by Partwork.
Quality Guaranteed
100% quality assurance on every order. If a part doesn't meet our standards, we reprint it at no cost to you.
No Minimum Order
Print a single prototype or a batch of 100. Pricing scales with quantity - no setup fees, no MOQ constraints.
Seamless Multi-Process Platform
Use Partwork for SLA, FDM, CNC machining, and sheet metal from one dashboard. Consolidate all your manufacturing in one place.
SLA vs FDM - Choosing the Right 3D Printing Process
| Feature | FDM 3D Printing | SLA 3D Printing |
|---|---|---|
| Layer Resolution | 50-400µm (visible layer lines) | 25-100µm (near-invisible layers) |
| Surface Finish | Ra 5-15µm (rough, layered texture) | Ra 0.5-1.0µm as-printed (smooth) |
| Dimensional Accuracy | ±0.3mm or ±0.3% | ±0.1mm or ±0.1% |
| Detail & Fine Features | Limited by nozzle diameter (0.4mm min) | Down to 0.2mm features |
| Transparent Parts | Not achievable | Up to 90% light transmission |
| Material Options | Wide range: PLA, ABS, Nylon, PC, TPU | Standard, Clear, Tough resins |
| Mechanical Strength | Higher (especially Nylon, PC) | Moderate (best with Tough resin) |
| Flexibility / Rubber Parts | Excellent (TPU, flexible materials) | Limited (not ideal for elastomers) |
| Post-Processing | Sanding required for smooth finish | Smooth as-printed, minimal post-work |
| Best Use Case | Functional prototypes, production parts | Visual prototypes, fine details, transparents |
| Cost (small parts) | Lower (₹150-₹500 typical) | Moderate (₹400-₹1,200 typical) |
| Turnaround | 3-5 days standard | 2-4 days standard |
From Single Prototype to Production Batch
SLA is cost-effective from single prototypes up to 200-unit batches. For volumes beyond that, we'll recommend the most economical process - whether SLS, injection moulding, or CNC machining - all available through Partwork.
- 11-5 parts: Rapid design validation and concept proofing
- 105-50 parts: Functional testing, user trials, investor samples
- ∞50-200 parts: Bridge production, pre-launch batches
- ∞200+ parts: Low-volume production runs
Industries We Serve
Frequently Asked Questions
What is the difference between SLA and FDM 3D printing?
SLA uses a UV laser to cure liquid resin layer by layer, producing much finer details and smoother surfaces (Ra 0.5µm) compared to FDM which melts and extrudes plastic filament (Ra 5-15µm). SLA is best for visual prototypes and fine details; FDM is better for large structural parts and wider material options.
How smooth is the surface finish of SLA parts?
SLA parts print at Ra 0.5-1.0µm as-printed, which is 10× smoother than standard FDM. After light sanding and polishing, Ra 0.2µm (near-mirror finish) is achievable. Most SLA parts require minimal post-processing compared to FDM.
Can you print truly transparent, clear parts?
Yes. With our Clear Resin, parts achieve up to 90% light transmission after printing, washing, and polishing. For maximum optical clarity, we recommend polishing with progressively finer grits and finishing with a clear UV-resistant coating.
How accurate are SLA printed parts?
SLA printing achieves ±0.1mm or ±0.1% dimensional accuracy (whichever is greater), which is 3× better than standard FDM. This makes SLA suitable for prototypes requiring accurate fits, thin walls, and fine features down to 0.2mm.
How fast can I get SLA printed parts?
Express orders are dispatched in 2-3 days. Standard orders with basic finishing take 4-5 days. Parts requiring painting or clear coating take 6-7 days. Same-day printing is available for urgent orders placed before 10 AM, subject to machine availability.
Which resin should I choose for functional testing?
Choose Tough / ABS-like Resin for functional testing. It simulates the behaviour of ABS/PP with up to 25% elongation at break and impact resistance. It handles snap-fits, assembly testing, and light mechanical loads better than Standard Resin.
Are SLA resin parts safe for food or medical use?
Our standard resins are RoHS compliant but not certified for direct food contact or long-term skin contact. Biocompatible and medical-grade resins are available on request for dental, surgical guide, and medical device applications.
What file formats do you accept?
We accept STL, OBJ, and 3MF files for SLA printing. STEP/STP files can also be uploaded and we'll convert them. Ensure your model is manifold (watertight) for best results.
Can you paint or colour SLA parts?
Yes. SLA parts accept paint very well due to their smooth surface. We offer priming and spray painting in any RAL or Pantone colour, clear gloss or matte coating, and limited dyeing options for standard and tough resins.
How strong are SLA printed parts compared to FDM?
SLA parts (Standard Resin: ~65 MPa tensile strength) are comparable to or slightly stronger than PLA, but more brittle. Tough Resin improves impact resistance significantly. For high-strength structural applications, FDM with Nylon/PC or CNC machining is recommended.
Can SLA parts be used as master patterns for casting?
Yes, SLA is one of the best methods for producing master patterns for silicone moulding and investment casting. The smooth surface reduces post-processing time on the mould. We recommend Standard or Clear Resin for casting masters.
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