Which 3Dresyn thermoplastic-like resin is best for your functional application?
Which 3Dresyn thermoplastic-like resin is best for your functional application?
This guide compares the main 3Dresyn® thermoplastic-like resin families to help users identify the best material according to real application needs rather than polymer name alone.
These materials are not direct replacements for injection-moulded thermoplastics. They are engineered photopolymers designed to reproduce specific functional behaviour windows in additive manufacturing.
Recommended selection logic: start from the required mechanical behaviour, then refine by rigidity, ductility, dimensional stability, thermal resistance and geometry.
The best thermoplastic-like resin is not the one with the highest headline value, but the one whose stiffness, elongation, hardness, thermal profile and process behaviour fit the real part geometry and loading conditions.
Cross-comparison table
| 3Dresyn | Behaviour class | Tg | Flexural strength | Elongation | Young’s modulus | Shore hardness | Best for | Not ideal for |
|---|---|---|---|---|---|---|---|---|
| PEEK-like | Ultra-strong rigid engineering | 110–120 °C | 120–140 MPa | <3% | 2000–3000 MPa | D85–90 | Structural housings, high-strength parts, heat-resistant technical components, lightweight engineering parts requiring high flexural strength and toughness. | Soft-flex parts, living-hinge-like deformation, applications requiring high ductility. |
| PMMA-like | Hard rigid acrylic-like | >130 °C | 80–100 MPa | <6% | 2700–3300 MPa | D85–90 | Hard rigid covers, dimensional inserts, thermally stable technical parts, applications prioritizing hardness and stiffness. | Impact-heavy applications, repeated flexing, high deformation tolerance. |
| Acetal POM-like | Rigid precision engineering | >90 °C | <80–90 MPa | <25% | 2500–3000 MPa | D80–85 | Rigid technical parts, precise housings, mechanism-related geometries, dimensional fixtures and stable engineering inserts. | Very soft impact-absorbing parts, high-flex or hinge-like behaviour. |
| ABS-like | Balanced engineering general-purpose | >60 °C | <80 MPa | <10% | 1000–2000 MPa | D70–80 | Functional housings, clips, covers, jigs, fixtures, durable prototypes and balanced technical parts. | Ultra-high strength applications, very high ductility needs, very soft flexible parts. |
| HIPS-like | General-purpose rigid impact-tolerant | >25 °C | <65 MPa | <30% | c. 2000 MPa | D60 | General rigid technical parts, practical housings, covers and moderate-impact engineering geometries. | Very hard rigid thermal parts, very soft or highly deformable parts. |
| PC-like | Balanced structural engineering | >45 °C | <55 MPa | <40% | 1000–1400 MPa | D70 | Durable housings, structural covers and balanced technical parts requiring more give than rigid engineering grades. | Very rigid precision parts or very soft deformation-driven applications. |
| Nylon-like | Thin-wall ductile semi-rigid | >35 °C | <40 MPa | <40% | <1200 MPa | D70 | Thin-wall ductility, snap-fits, bend-without-cracking regions, flexible housings and parts requiring ULWA behaviour. | Maximum rigidity, very high heat resistance, very soft compliant parts. |
| PP-like | Ductile low-modulus engineering | <25 °C | <30 MPa | <80% | <1000 MPa | D70 | Hinge-like parts, flexible covers, impact-tolerant components, clips and geometries requiring controlled flex and recovery. | Rigid structural parts, precision inserts, hard high-stiffness applications. |
| PET-like | Mid-range balanced functional | >35 °C | <50 MPa | <40–60% | <1000 MPa | D60–70 | Balanced technical parts, semi-rigid housings and general functional geometries requiring moderate stiffness and moderate ductility. | Extreme rigidity or very soft highly deformable use cases. |
| TPU-like | Flexible engineering | c. 25 °C | <40 MPa | <30–50% | <900 MPa | D60–70 | Compliant parts, flexible covers, soft interfaces, impact-moderating components and controlled-deflection technical geometries. | Rigid housings, hard inserts, very stable structural parts. |
| HDPE-like | Low-rigidity resilient engineering | <25 °C | <30 MPa | <100% | <800 MPa | D60 | Resilient covers, compliant housings, soft technical parts and deformation-tolerant lightweight geometries. | Dimensional rigidity, hard surfaces, structural loading. |
| LDPE-like | Very soft low-modulus engineering | <25 °C | <20 MPa | >100% | <300 MPa | D40–50 | Very soft technical parts, compliant interfaces, deformation-intensive geometries and minimal-rigidity functional use. | Structural parts, dimensional stability, rigid or semi-rigid engineering applications. |
Mobile: scroll horizontally to view all columns. The first column remains visible while scrolling.
How to choose the right material family
1) Start from the required mechanical behaviour
Begin by asking whether the part should be rigid, balanced, ductile or soft. This is more reliable than selecting by polymer name alone.
2) Then refine by rigidity, heat and deformation tolerance
Many applications fail because material selection stops at “tough”, “strong” or “PP-like” without considering modulus, thermal profile or local geometry.
Selection by real application need
Best material by use case
These are the most common starting points when selecting within the 3Dresyn thermoplastic-like engineering collection.
- Structural housings and high-performance technical parts: PEEK-like
- Hard rigid covers and high-hardness thermal parts: PMMA-like
- Rigid precision engineering and dimensional fixtures: Acetal POM-like
- General engineering housings, fixtures and durable prototypes: ABS-like
- General-purpose rigid technical parts: HIPS-like
- Balanced structural parts with moderate give: PC-like
- Thin-wall bendability and snap-fit behaviour: Nylon-like
- Hinge-like deformation and flex-recovery: PP-like
- Mid-range balanced semi-rigid parts: PET-like
- Flexible engineering parts and compliant interfaces: TPU-like
- Low-rigidity resilient technical parts: HDPE-like
- Very soft compliant geometries: LDPE-like
Important engineering caveats
Do not choose by polymer name alone
Terms such as PEEK-like, ABS-like, PP-like or Nylon-like describe a target functional behaviour window in additive manufacturing. They do not imply direct equivalence to molded thermoplastics under all conditions.
- Printer type and wavelength
- Exposure conditions and process calibration
- Layer thickness and build orientation
- Part geometry and local wall thickness
- Post-curing workflow
Properties must be interpreted as workflow-dependent
Mechanical performance in resin 3D printing depends on material formulation together with curing and post-processing. Final validation must always be performed in the real application workflow.
Continue the engineering workflow
Explore the collection in more detail
Use the technical bulletins, comparative pages and engineering methods below to refine final material selection and implementation.
Conclusion
The best 3Dresyn thermoplastic-like resin depends on the required behaviour of the final part: structural rigidity, balanced engineering use, thin-wall ductility, hinge-like flex, compliant deformation or very soft response. Start from the real mechanical need, then refine through process compatibility, geometry and validation.