Why Choose Resin 3D Printing?
Resin 3D printing — using SLA (Stereolithography) or DLP (Digital Light Processing) — is the preferred choice when applications demand superior surface finish, intricate details, or specific material properties. A UV laser (SLA) or projected image (DLP) cures liquid photopolymer resin layer by layer, producing parts with smooth surfaces and dimensional accuracy far beyond what FDM or SLS can achieve.
Resin Materials Available
Standard Resin
General-purpose for concept models and visual prototypes. Smooth matte finish, moderate strength. Ideal for design validation and presentation models.
Tough Resin
ABS-like impact resistance. Best choice for most functional engineering prototypes that need to withstand impact before committing to production tooling.
Flexible Resin (80A)
Rubber-like Shore A hardness. Perfect for gaskets, seals, overmolds, and components requiring flexibility and durability under repeated flexing.
Castable Resin
Clean burnout for lost-wax casting with zero ash residue. Widely used in jewelry manufacturing and dental restorations.
Dental Resin
Class IIa certified biocompatible resin for surgical guides, models, and orthodontic appliances meeting medical device standards.
High Temp Resin (HDT 238C)
High heat deflection temperature. Suitable for hot air/fluid handling components and thermoform molds.
Resin vs SLS Nylon: How to Choose
| Criteria | Resin (SLA/DLP) | SLS Nylon |
|---|---|---|
| Surface Quality | ★★★★★ Excellent, smooth | ★★★ Good, matte |
| Dimensional Accuracy | ★★★★★ ±0.1mm achievable | ★★★ ±0.2-0.5mm |
| Strength / Durability | ★★★ Moderate | ★★★★ Excellent, isotropic |
| Feature Resolution | ★★★★★ Extremely fine details | ★★★ Limited by powder size |
| Best For | Visual models, dental, jewelry | Functional parts, assemblies |
Design Guidelines
| Parameter | Minimum | Recommended |
|---|---|---|
| Wall Thickness | 0.6 mm | 1.0 – 2.0 mm |
| Minimum Feature | 0.4 mm | 0.6 mm+ |
| Unsupported Overhang | 0.5 mm | < 45 degrees |
| Drainage Holes | Required for hollow parts | 2mm+ diameter |
Applications
Jewelry & Art
Castable resin burns out cleanly capturing prong settings and engravings with sub-millimeter precision for jewelry manufacturing. PrintVX serves jewelry designers and manufacturers worldwide.
Dental & Medical
FDA-compliant dental resins enable surgical guides, study models, and custom prosthetics meeting Class IIa medical device standards. We maintain batch traceability for regulatory compliance.
Engineering Prototypes
Tough resin delivers the closest approximation to injection-molded ABS for functional prototypes that need to withstand impact and repeated use before committing to production tooling.
Surface Finishing for Resin Parts
- As-built — smooth finish, suitable for painting or plating
- Sandblasting — uniform matte surface, removes uncured residue
- Polishing — near-mirror or high-gloss finish for presentation models
- Electroplating — copper, nickel, or gold plating for jewelry and decorative parts
Frequently Asked Questions
Lead time for resin 3D printing?
Standard lead time is 2-5 business days. Express service available for urgent prototyping requirements.
SLA vs DLP — what is the difference?
SLA uses a single-point laser to trace each layer; DLP projects an entire layer at once using a digital light projector. DLP is generally faster for medium-sized parts; SLA offers larger build volumes and higher consistency for very large parts.
Do you provide assembly services?
Yes. PrintVX offers assembly, finishing, and packaging services as value-added options. Select these when requesting a quote.
Can resin parts be used outdoors?
Standard resins are not UV-stable and will degrade in prolonged sunlight. For outdoor applications, consider our tough resin with UV-resistant coating or SLS nylon.
Ready to Get Your Custom Parts?
PrintVX offers professional 3D printing and CNC machining services worldwide. From prototyping to low-volume production — fast turnaround, competitive pricing.
Get a Free Quote at PrintVX.com