3Dresyn PC-like vs PC-like and balanced engineering SLA / DLP / LCD 3D printing resins
Mechanical Resistance Comparison & Executive Summary
3Dresyn PC-like is a balanced engineering photopolymer designed to approximate polycarbonate-like mechanical behaviour in additive manufacturing. It is positioned for applications requiring a combination of moderate stiffness, useful toughness, controlled deformation and engineering-grade functional stability.
With flexural strength below 55 MPa, elongation below 40%, Young’s modulus of 1.0–1.4 GPa and Shore D 70, PC-like occupies a middle space between more rigid engineering resins and more ductile PP-like or Nylon-like families.
Choose 3Dresyn PC-like when you need a balanced structural response with more give than rigid engineering grades, but more shape stability than highly ductile resins.
Data Table — Typical Properties (post-cure; internal data and competitor TDS)
| Resin | Flexural strength | Elongation | Young’s modulus | Noted traits |
|---|---|---|---|---|
| 3Dresyn PC-like | <55 MPa | <40% | 1.0–1.4 GPa | Balanced engineering response; Shore D 70; Tg >45 °C; useful compromise between rigidity and ductility. |
| Formlabs Tough 2000 | ~65 MPa | ~48–74% | ~1.1–1.6 GPa class | Closed ecosystem; tougher and more ductile; less PC-like balance. |
| Liqcreate Tough-X | Impact-focused | 100–150% | Lower stiffness | Very ductile; open systems; softer than a classic PC-like engineering profile. |
| General engineering rigid/tough blends | Varies | Varies | Varies | Broader category; performance depends heavily on cure, ecosystem and post-processing. |
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Comparability note: PC-like behaviour is often approximated through balanced tough engineering resins rather than direct polycarbonate equivalence. Fair comparison requires normalization of stiffness, elongation, geometry and post-curing conditions.
Where 3Dresyn PC-like Wins
1) Balanced structural behaviour
- PC-like is positioned for applications needing more shape retention than highly ductile materials, while still allowing more deformation tolerance than rigid engineering grades.
2) Useful stiffness–toughness compromise
- Its mechanical window makes it relevant for durable housings, structural covers and functional parts where moderate toughness is needed without dropping too far in rigidity.
3) Practical engineering implementation
- Open-system 385–405 nm compatibility enables broad use without closed ecosystem dependence.
Application Guidance
- Choose 3Dresyn PC-like for: durable housings, structural covers, balanced technical parts and engineering geometries requiring a stiffness–toughness compromise.
- Choose a stiffer resin if rigidity dominates the application.
- Choose a more ductile resin if local bending or high elongation is the primary need.
Processing Notes (Quick Start)
- Compatible with open SLA, DLP and LCD systems in the 385–405 nm range.
- Use validated exposure and post-cure to maintain the intended mechanical balance.
Normalization & Caveats
- PC-like positioning is based on functional engineering behaviour analogy, not direct equivalence to molded polycarbonate.
- Mechanical balance depends strongly on curing and post-processing conditions.
References
- 3Dresyn PC-like internal product data
- Formlabs Tough 2000 TDS
- Liqcreate Tough-X TDS
- Relevant balanced engineering resin documentation