SLA 3D Printing Service.
Large-format resin, shipped fast.
Single-piece resin parts up to 106 in (2.7 m) — one of the largest resin build volumes in the US, printed in one piece with no glued seams. 80–100 µm layers, ±0.15 mm tolerance, 11 production resins — quoted instantly, with a named engineer in Los Angeles.
Single-piece up to 106 in (2.7 m)
Based in Los Angeles
From $50 · order online
NDA standard
★★★★★ 5.0 on Google · 150+ teams in 23 countries · one named engineer, from quote to delivery
Trusted by
We run & qualify what we print
Resins — 11 production SLA resins
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Machines — run & calibrated in our shop & vetted network
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Parts — printed in L.A., finished to spec
New customer
First-time customers — Free DfAM review + free U.S. shipping on your first order.
Get an instant price →
Instant SLA quote · live pricing
Read in your browser — live pricing, your file stays private until you order. SLA preselected.
Your quote
Upload a part and get your quote.
How it works
Two ways to order.
Order online in minutes, or talk to an engineer first — same team, same QC either way.
Fastest · self-serve
Order online
Most orders never need a call — upload, price, order.
- 1Upload & get an instant price. Mutual NDA applied automatically, before any file review.
- 2Place your order online. A free DfAM check runs in parallel — we flag issues before printing.
- 3We print, finish, QA & ship. Washed, UV-cured and inspected to spec — 2–7 days.
Guided · complex parts
Talk to an engineer
For tricky geometry, optical finishes or strict medical programs — right the first time.
- 1Call us, or request a callback. Custom NDA if your program needs one.
- 2An engineer reviews your part and sends a firm quote — with resin and DfAM tips to de-risk the build.
- 3Approve by web link or P.O. — into production on the same QC standard.
The technology
What is SLA 3D printing — and when to choose it.
Stereolithography (SLA) cures liquid resin layer by layer with UV light. Because each layer is drawn optically, not extruded, it gives the smoothest surface and finest detail of any 3D printing process — 80–100 µm layers, 0.2 mm features and a near mold-like finish off the printer.
Choose SLA when surface quality, detail and accuracy matter most: show and concept models, dental and medical appliances, jewelry casting patterns, optics, anatomical models and precision tooling. With our Tough and Heat-Resistant resins (up to 90 °C HDT) it also covers functional prototyping.
Engineer's takeFor rugged, snap-fit nylon parts have a look at SLS; for budget or high-volume runs, FDM with vapor smoothing. Not sure? Ask an engineer — we'll recommend the cheapest process that meets your spec, even if it isn't SLA.
SLA / DLPThis page
FDM
SLS
Surface finish
Smoothest — near mold-like
Visible layers
Slightly grainy
Min feature / layers
0.2 mm · 80–100 µm
0.8 mm · 100+ µm
0.5 mm · 80+ µm
Typical tolerance
±0.15 mm
±0.3 mm
±0.2 mm
Strength
Good — engineering resins
Good–high
High, isotropic
Max single piece
Up to 106×35×31 in (2700×900×800 mm)
24+ in (600 mm)
13 in (330 mm)
From
$50
$45
$65
Best for
Detail, finish, accuracy
Budget & high-volume
Tough functional nylon
Where SLA shines
The smoothest, sharpest detail — resin parts.
Product design
Concept & show models
Smooth, paint-ready surfaces that read as finished products.
Engineering
Functional prototypes
Tough, ABS-like resin for fit, form and snap-fit testing.
Optics · R&D
Clear & optical parts
Polished transparent resin for lenses, housings, flow cells.
Electronics
Electronics & consumer
Crisp enclosures, buttons and housings in engineering resin.
Jewelry
Casting master patterns
High-detail resin masters for silicone molds & casting patterns.
Dental · Medical
Dental & medical
Dental & medical models, guides and appliances in standard or clear resin.
Healthcare
Anatomical models
Transparent and multi-tone models for surgical planning & teaching.
Post-processing
Finishing & paint
Sanding, clear-coat, color match and dimensional QC.
Resins
SLA materials — 11 production SLA resins.
Eleven core SLA resins, qualified with dialed-in parameters for repeatable results — more available on request.
Standard Resin
Concept models · fit-check · display & presentation
White · smooth, fine detail · from $0.27/cm³
Smooth, paint-ready resin for concept models and show parts — our best-value everyday choice.
Durable General Resin
Everyday prototyping · sturdier than standard
Amber translucent · durable · from $0.30/cm³
A tougher everyday resin that takes repeated handling — a balanced all-rounder for functional concepts.
ABS-Like Tough Resin
Snap-fits · enclosures · impact parts
Grey · ABS-like impact · from $0.34/cm³
ABS-like impact resistance for snap-fits and enclosures — flexes without cracking under real handling.
Engineering Resin (hinges & heat)
Living hinges · functional assemblies
White · PP/ABS-like · from $0.34/cm³
PP/ABS-like resin with living-hinge capability — for assemblies that flex repeatedly without fatigue.
High-Impact Black Resin
Automotive · industrial · functional black parts
Black · high impact · from $0.34/cm³
High-toughness black resin for automotive and industrial parts that take impact and stress.
High-Toughness Resin (Yellow)
Max toughness · large painted parts
Yellow · very high toughness · from $0.30/cm³
Our toughest resin — maximum impact resistance, ideal for large paint-ready parts like bumpers and grilles.
Smooth Black Resin
Aesthetic housings · display black parts
Black · smooth aesthetic · from $0.34/cm³
A smooth, even black surface for aesthetic housings and presentation models — when looks matter most.
Fine-Detail Brown Resin
Finest detail · crisp features · masters
Brown · non-reflective · from $0.34/cm³
Non-reflective brown resin that captures the finest features and sharpest edges — for masters and miniatures.
Translucent Resin
Light guides · diffusers · fluidics
Frosted · light-transmitting · from $0.68/cm³
Frosted, light-transmitting resin for light guides, diffusers and fluidics — distributes light evenly.
Clear / Transparent Resin
Lenses · transparent housings · optics
Polished + clear-coat · glass-like · from $1.15/cm³
Optically clear after polishing and clear-coating — for lenses, transparent housings and display optics.
Heat-Resistant Resin
Parts exposed to elevated temperature
Green · up to 90 °C HDT · from $0.61/cm³
Stays dimensionally stable up to ~90 °C HDT — for fixtures and parts exposed to moderate heat.
Order a material sample kit
A physical swatch of every resin — color, clarity and surface in hand. Keep it on the desk and your team always knows what they’re choosing from.
★ Finishing & QC
Receive parts made by people who obsess over the finish.
Every SLA order is printed, washed, UV-cured, finished and inspected to spec. Our team runs print and QC in-house and manages specialist finishing through vetted partners. The same engineer follows your part from quote to QC — so what ships is exactly what you designed.
End-to-endPrint · wash · cure · finish · QC
80–100 µmLayers · ±0.15 mm tolerance
Same teamFrom your quote to final inspection
SLA · Surface FinishingFrom as-printed to mirror chrome
Finishing menu
Every finish your part can get — priced up front.
From as-printed to mirror-chrome — combine finishes freely; every part is washed, UV-cured and inspected before it ships.
Standard finish
Support removal + cleanup · visible layer lines
Included · 2–3 days
Support removal, solvent wash, UV post-cure, and visual inspection — included on every order. Parts are dimensionally accurate and print-consistent straight from the machine.
Fine polishing
Smooth, no layer lines, primer — paint-ready
From $0.25/g · 3 days
Progressive sanding from 220 to 2000 grit delivers a smooth, satin surface. Required before painting or electroplating. Removes print lines and tool marks completely.
Painting
Smooth solid color in your shade(s)
From $0.10/cm² · 3 days
Color-matched RAL or Pantone paint applied after fine polishing. Single or multi-color, gloss or matte. Ideal for client presentations, trade-show models, and brand-accurate samples.
High-gloss clear coat
Glossy optical coat for transparent parts
Incl. on Clear · 5–7 days
UV-stable optical coating applied over polished or painted surfaces. Delivers a glass-like gloss finish for display models, lens covers, and transparent parts.
Electroplating
Mirror chrome metallic surface
From $0.63/g · 5–7 days
Mirror chrome metallic coating applied via electrochemical process. Adds premium aesthetics, surface hardness, and scratch resistance — transforms resin into a metal-look part.
Precision polishing Ra 3.2
Mirror-smooth surface, Ra 3.2
$50 / part · 3 days
Controlled mechanical polishing to Ra 3.2 µm surface roughness. Used for mating faces, optical surfaces, and parts requiring tight sealing or precise mechanical fits.
Also available: threaded brass inserts (M2–M8). Painting and electroplating require fine polishing first. (Vapor smoothing / passivation apply to nylon or metal parts, not SLA.)
QA dimensional report
Batch-to-part traceability
Resin Certificate of Analysis
Mutual NDA before file review
Capabilities
Large-format SLA tolerances & build envelopes.
Need tighter tolerances or finer layers? Talk to our engineer.
Spec
Standard
Fine / DLP
Notes
Max single-piece build
106 × 35 × 31 in (2700 × 900 × 800 mm)
7.6 × 4.7 × 11 in (192 × 120 × 280 mm)
Large-format SLA · bonding only beyond 106 in (2.7 m)
Layer height
100–200 µm
80–100 µm
Finer = smoother, slower
Minimum feature
0.3 mm
0.2 mm
Embossed / engraved text 0.4 mm
Typical tolerance
± 0.2 mm
± 0.15 mm
±0.15 mm typical · ±0.15 % × L over 100 mm
Min wall thickness
1.0 mm
0.5 mm
Supported walls only
Common finishes
Sanded · primed
Polished · clear-coat
Color match & painting available
Recent work
SLA parts we shipped.
resin · Medical
Patient-specific surgical guides, sterilization-ready
Fine-detail resin · Jewelry
Master collection — 12 ring patterns, crisp detail
Resin · Automotive
Full-scale automotive trim parts, paint-ready
Resin · Foundry
Master patterns for investment casting
Resin · Product design
Miniature product set for a trade-show display
Tough resin · Product engineering
Enclosure & chassis components — 4 design iterations in a week
What our customers say
★★★★★
★★★★★
"Our enclosure prototypes came out so clean we used them in the client pitch straight off the printer. Crisp edges, no layer lines after finishing. The instant quote made ordering a 10-second job."
NS
Nathan ScottIndustrial Designer · SLA client
★★★★★
"We needed clear resin flow cells with optical-grade windows. They polished them to spec and shipped in 3 days. Real engineers walked us through the resin choice — not a contact form."
RM
Rachel MendozaR&D Lead · SLA client
★★★★★
"dental models with tight tolerances, batch after batch. ±0.15 mm held across every order and the surface is exactly what our workflow needs. Our go-to for resin now."
DW
Dr. Daniel WrightUCI Researcher · dental SLA client
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5.0★Google rating
12 reviews
12 reviews
On-time, in-spec — or we make it right.
Ship late or out of tolerance? We reprint it free. Every part ships with a QA dimensional report, resin Certificate of Analysis and full batch-to-part traceability.
Why us
A manufacturing partner — not just a marketplace.
We print in our own L.A. shop and through a vetted partner network, with a named engineer managing finishing, QC and your IP end-to-end on every order.
Frequently asked questions
Don't see your question? Our team responds personally to any inquiry in under 24 hours.
Talk to us →How much does SLA 3D printing cost?
Pricing is instant — upload your STL and the calculator returns a live price as you pick resin and finishing, from a $50 minimum. Larger parts are hollowed to cut cost and bulk quantities earn automatic discounts.
How fast can I get my SLA parts?
Most SLA orders ship in about 2 days; complex or large-format parts take 5–7 days, and rush is available on a priority queue. A free engineer DfAM check runs in parallel and a named applications engineer confirms your quote within 24 hours — most orders ship without changes.
How accurate are SLA parts?
SLA / DLP holds a typical tolerance of ±0.15 mm with 0.2 mm minimum features and 80–100 µm layers — the smoothest, finest detail of any 3D-printing process. Tighter tolerances are available with engineer review and are confirmed before printing.
How strong and durable are SLA resin parts?
It depends on the resin. Our Tough resin has high impact strength and flexes without cracking — built for snap-fits, enclosures and functional or automotive prototypes — while Heat-Resistant handles parts exposed to heat (up to 90 °C HDT). Tell us how the part will be used and an engineer recommends the right resin.
Which SLA resins do you offer?
11 production SLA resins: Standard (white), Durable General (amber), Tough / ABS-Like (grey), Engineering (white, living hinges), High-Impact Black, High-Toughness (yellow), Smooth Black, Fine-Detail (brown), Translucent (frosted), Clear / Transparent (polished) and Heat-Resistant (green, up to 90 °C HDT). We accept STL, STEP, OBJ, 3MF and IGES — no CAD file? We can redraw from a sketch, photo or sample.
What finishing options are available?
Every part includes a standard finish (support removal + cleanup). Optional, priced per part: fine polishing (smooth, paint-ready), painting in your colors, high-gloss clear coat for transparent parts, electroplating (mirror chrome) and precision polishing to Ra 3.2 — plus threaded brass inserts. Painting and electroplating require fine polishing first; finishes combine freely and are added to your quote.
What is SLA 3D printing, and when should I choose it over FDM or SLS?
Stereolithography (SLA) cures liquid resin layer by layer with a laser, giving the smoothest surface and finest detail of any 3D-printing process. Choose SLA when surface finish, fine detail and accuracy matter most — show models, optics, tooling, dental and jewelry patterns. For rugged functional nylon consider SLS; for budget or high-volume runs, FDM. Not sure? Ask an engineer — we recommend the cheapest process that meets your spec.
How big can SLA parts be?
Single-piece build envelope is up to 106 × 35 × 31 in (2700 × 900 × 800 mm) on our large-format SLA — one of the largest resin build volumes available — down to high-detail DLP at 7.6 × 4.7 × 11 in (192 × 120 × 280 mm) with 80–100 µm layers. Most parts print in one piece; only parts beyond 106 in (2.7 m) are split and bonded with engineered seams.
Is my design protected?
Mutual NDA is standard before file review — no exceptions, no extra charge, typical turnaround under 1 hour. Your files are read locally in your browser for quoting and never leave your computer until you order; every project is handled by a named engineer and managed end-to-end from our Los Angeles shop, with QA dimensional reports and full part traceability.
What is the minimum order, which files do you accept, and where do you ship from?
Minimum order is $50. We accept STL, STEP, OBJ, 3MF and IGES files — no file? We can redraw from a sketch, photo or sample. Print services and warehouse are in Los Angeles, with free U.S. shipping on orders over $200 and free delivery within the L.A. metro. Upload your part for an instant price.
What's the difference between SLA and DLP resin printing?
Both SLA and DLP cure liquid photopolymer resin with UV light, but they do it differently. SLA uses a single laser that traces each layer point by point — ideal for large-format builds up to 106 in (2.7 m) with consistent accuracy across the whole bed. DLP flashes an entire layer at once using a digital light projector, delivering 80–100 µm resolution and slightly faster cycle times for small, highly detailed parts. We run both in our L.A. shop and select the right machine per geometry — your engineer will specify which process best suits your part.
Do SLA parts shrink or warp, and how do you prevent it?
All photopolymers shrink slightly as they cure — typically 0.1–0.3% — and wide, flat parts curl most if the cure cycle isn't dialed in. We prevent it with calibrated orientation, engineered supports and a controlled post-cure (405 nm, 60–80 °C). Tight-tolerance features are confirmed before printing and verified with a QA dimensional report on every order. Out of tolerance? We reprint it free.
What wall thickness and design rules should I follow for SLA?
Supported walls: 0.5 mm minimum (DLP) / 1.0 mm (standard SLA). Unsupported walls: 1.0 mm minimum. Minimum embossed or engraved text: 0.4 mm. Minimum feature: 0.2 mm. For hollow parts, add drainage holes ≥ 3.5 mm so uncured resin can escape — trapped resin causes pressure build-up and cracking. Keep hollow wall thickness ≥ 2 mm. Not sure your geometry will print cleanly? Upload the file and a free DfAM check will flag anything before we touch the machine.
Can you hollow parts to reduce cost and weight?
Yes — hollowing is one of the most effective ways to cut material cost and part weight on large SLA builds. Our engineers hollow parts by default when it makes sense, add internal ribs for structural integrity, and place drain holes so all uncured resin evacuates cleanly. Just note the intent in the order notes or ask during the DfAM review; we'll model the hollowing or advise on the right approach for your geometry and finish requirements.
Will support marks be visible on my finished part?
Support contact points leave small witness marks (typically 0.3–0.5 mm nubs) on surfaces they touch. Our engineers orient parts to put supports on non-cosmetic faces wherever possible, and choose the lightest support structure that keeps the build stable. If all surfaces are cosmetic — common on jewelry patterns and show models — order Fine Polishing ($0.25/g) and we sand and prime the whole part to a smooth, paint-ready finish. Mention critical surfaces in your notes and we'll plan orientation accordingly.
Can SLA resin parts be used for end-use production, not just prototypes?
Yes. Tough resin (high-impact, ABS-like) runs production jigs, fixtures, enclosures and snap-fits; Heat-Resistant (up to 90 °C HDT) suits fixtures and parts exposed to moderate heat; polished, clear-coated Clear works for optical covers and flow cells. SLA has lower elongation at break than injection-molded plastics, so we'll flag any part where SLS nylon or metal is a better long-term fit.
Is SLA resin food-safe or biocompatible?
Standard photopolymers are not food-safe or biocompatible as printed. For dental appliances, surgical guides and medical models we use biocompatible-grade resins with the required post-cure and cleaning protocols — send us your standard (e.g. ISO 10993, Class I/II) and we'll confirm applicability. For food contact, we recommend a food-grade coating applied after printing.
Is SLA resin UV-stable — can parts be used outdoors?
Standard and Tough photopolymers yellow and embrittle under prolonged UV and weather — they're not made for long-term outdoor use unprotected. For parts that will see sunlight, our High-Gloss Clear Coat adds meaningful UV resistance and service life. For demanding outdoor use (months of sun, thermal cycling), SLS nylon or FDM ASA are more naturally UV-stable. Tell us the environment and we'll match process and finish.
Your part, in resin — quoted in 60 seconds.
Upload a file, pick a resin and see your price live. NDA standard, free DfAM review, from $50 — shipped from Los Angeles in about two days.