3Dresyns® Structured Selection Framework (SSF)

The 3Dresyns® Structured Selection Framework (SSF) is an integrated engineering methodology designed to reduce uncertainty in photopolymer selection and implementation.

Rather than selecting materials based solely on datasheet values, SSF combines mechanical logic, exposure control and empirical validation into a coherent workflow applicable to SLA, DLP and LCD additive manufacturing systems.

For broader calibration, troubleshooting and engineering resources see the 3Dresyns® Photopolymer Engineering Hub.

Why a structured framework?

Photopolymer performance is inherently process-dependent. Final part behaviour depends not only on formulation chemistry, but also on multiple process variables including:

• Printer irradiance and optical distribution
• Layer thickness and exposure strategy
• Post-curing protocol
• Geometry and smallest structural feature
• Load mode (static, impact or cyclic)

SSF addresses this complexity through three complementary technical pillars linking design logic, photopolymer curing behaviour and empirical validation.

The three pillars of SSF

1) Engineering Resin Selection Tool

A physics-based structural selection methodology built around the relationship:

Rigidity ∝ E × t³

Instead of selecting materials only by Shore hardness, the Engineering Resin Selection Tool links Young’s modulus with the minimum structural feature thickness to determine the stiffness required for functional reliability.

• Reduces over-specification
• Minimizes brittle-failure risk
• Aligns stiffness with geometry

Explore the Engineering Resin Selection Tool →

2) Curing Rate Control System (CRT)

A structured exposure–cure depth methodology correlating irradiance and exposure time with cured layer thickness under controlled optical conditions.

CRT provides:

• Exposure reproducibility across printers
• Dimensional control
• Layer thickness predictability
• Process transferability

CRT transforms empirical exposure tuning into a controlled calibration strategy.

Explore the Curing Rate Control System →

3) Structured Mechanical Screening Protocol (SMSP)

SMSP is a printer-native comparative mechanical classification protocol using a standardized wedge geometry printed directly on the user's printer.

It provides two practical readouts:

• Rigidity threshold (low-load bending response)
• Break thickness (fracture location under flexion)

SMSP enables rapid empirical confirmation of mechanical behaviour under real printing conditions prior to formal laboratory testing.

Explore SMSP →

How the framework works together

1. Define application intent (functional requirements, smallest feature, load mode)
2. Select stiffness window using Engineering Selection logic
3. Calibrate exposure using CRT methodology
4. Verify dimensional behaviour using structured calibration logic when required
5. Interpret recurrent anomalies using the Failure Atlas when needed
6. Confirm mechanical behaviour using SMSP
7. Proceed to validated workflow under qualified processing conditions

SSF therefore connects design intent → material selection → exposure calibration → dimensional verification → failure diagnosis → empirical validation within a single structured methodology.

Relationship with the Engineering Hub

The 3Dresyns® Photopolymer Engineering Hub functions as the central technical navigation layer for the broader SSF ecosystem.

While SSF defines the framework logic, the Engineering Hub provides organized access to the associated technical resources, including CRT, structured calibration, the Failure Atlas, SMSP and supporting documentation.

Positioning

3Dresyns® does not operate as a commodity resin supplier. We provide structured photopolymer systems supported by engineering logic and controlled implementation pathways.

SSF reflects our commitment to reproducibility, dimensional control and mechanical predictability in additive manufacturing.

Scientific foundations

• Classical beam mechanics (Euler–Bernoulli framework for slender bending elements)
• Photopolymer cure kinetics and exposure–depth relationships
• Comparative mechanical screening under geometry-controlled conditions
• Structured dimensional verification in X, Y and Z
• Morphological diagnosis of recurrent printing failures
• ISO-based hardness classification (Shore scales)

SSF is a structured engineering framework intended for pre-selection and process control. Final part qualification must be validated under full application-specific testing conditions.

For structured implementation support contact info@3dresyns.com