3Dresyns® Structured Selection Framework (SSF)
3Dresyns® Structured Selection Framework (SSF)
SSF integrates design intent, engineering material selection, comparative material positioning, exposure calibration, dimensional verification, failure diagnosis and empirical mechanical screening into a structured workflow for SLA, DLP and LCD additive manufacturing.
SSF supports pre-selection and controlled implementation. It does not replace final application-specific validation.
Core SSF Tools
Framework Map
Functional requirements • feature size • load mode
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Engineering selection
Material selection using stiffness and geometry logic
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Comparative positioning
Material-family selection
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Exposure calibration
CRT methodology
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Dimensional verification
Structured calibration
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Failure diagnosis
Failure Atlas
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Mechanical screening
SMSP
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Application-specific validation
Final performance under relevant use conditions
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Controlled workflow implementation
The 3Dresyns® Structured Selection Framework (SSF) is an integrated methodology designed to reduce uncertainty during photopolymer material selection and process implementation.
Instead of relying only on isolated datasheet values, SSF combines structural mechanics logic, comparative material positioning, curing behaviour, dimensional verification, failure diagnosis and empirical screening into a structured engineering workflow.
Why SSF
Photopolymer behaviour depends on multiple coupled variables, including:
- printer irradiance and optical system;
- exposure strategy and layer thickness;
- post-curing conditions;
- geometry and minimum feature size;
- load mode; and
- application context.
SSF organizes these variables into a defined selection and process-control sequence rather than treating material selection as a single datasheet comparison.
Core Pillars
Engineering Selection
SSF uses structural mechanics logic to connect material stiffness with geometry.
Rigidity ∝ E × t³
This simplified engineering relationship emphasizes that functional rigidity depends not only on material modulus but also strongly on part thickness and geometry.
- links modulus with geometry;
- helps avoid selection based on stiffness values alone;
- supports comparison of material behaviour in the intended structural context; and
- aligns material selection with functional requirements.
The relationship is used as selection logic within SSF rather than as a complete structural model for every geometry or load case.
Comparative Material Positioning
SSF positions candidate materials across functional resin families instead of treating one isolated property as sufficient for selection.
Comparative positioning may consider:
- stiffness range;
- deformation tolerance;
- thermal positioning;
- functional behaviour;
- geometry requirements; and
- application context.
This stage supports material-family pre-selection before printer-specific calibration and empirical screening.
Exposure Calibration (CRT)
The Curing Rate Control System provides structured exposure-development logic for photopolymer implementation.
- exposure control;
- layer-thickness alignment;
- dimensional process development; and
- assessment of exposure behaviour when transferring between printer conditions.
CRT supports development of appropriate curing conditions for the relevant material-printer-process configuration. It should not be interpreted as one universal setting applicable unchanged to every printer or workflow.
Mechanical Screening (SMSP)
The Structured Mechanical Screening Protocol provides a printer-native empirical comparison of printed wedge behaviour.
- rigidity threshold;
- break thickness; and
- printer- and workflow-dependent comparative behaviour.
SMSP is a comparative screening methodology, not standardized mechanical testing or final application validation.
Rigidity threshold and break thickness should be interpreted within the SMSP geometry, printer, processing and test conditions.
Dimensional Verification
Structured Calibration
After material and exposure conditions have been established, dimensional behaviour should be evaluated using structured calibration.
This stage helps assess behaviour in X, Y and Z under the applicable material, printer and processing conditions before relying on dimensional performance in the final application.
Failure Diagnosis
Diagnose before changing parameters randomly
If instability or visible defects remain after initial material selection and calibration, the Failure Atlas provides structured diagnostic logic for interpreting printing failures.
This stage is positioned before final screening and application validation so that obvious workflow problems are not confused with intrinsic material behaviour.
Screening versus Final Validation
Different Engineering Stages
SSF separates material pre-selection and empirical screening from final application validation.
- Material selection: identifies an appropriate candidate material family.
- CRT: supports exposure and curing development.
- Structured calibration: evaluates dimensional behaviour.
- Failure diagnosis: investigates workflow instability.
- SMSP: provides comparative empirical mechanical screening.
- Application-specific validation: evaluates the final material-process-part system under relevant use conditions.
A successful SMSP result does not by itself establish that the final printed part is suitable for every geometry, load case or application.
Implementation Sequence
- Define application intent and functional requirements.
- Select the relevant stiffness window.
- Position the appropriate material family.
- Calibrate exposure using CRT.
- Verify dimensional behaviour.
- Diagnose failures where necessary.
- Screen printed mechanical behaviour using SMSP.
- Validate final performance under application-specific conditions.
- Implement and document the controlled workflow.
Engineering Positioning
Design → Material → Process → Screening → Application Validation
SSF transforms photopolymer material selection from isolated datasheet comparison into a structured engineering sequence connecting material choice with process conditions and printed behaviour.
It does not eliminate the need for final validation of the actual part, workflow and application.
Scientific Foundations
- beam and structural mechanics logic;
- geometry-dependent rigidity;
- photopolymer curing behaviour;
- dimensional calibration methodologies;
- failure morphology analysis; and
- comparative mechanical screening.
Important Boundaries
What SSF Does Not Establish by Itself
SSF is a structured engineering framework for selection and implementation. It should not be interpreted by itself as:
- a guarantee that a selected material will satisfy every final application requirement;
- a substitute for printer-specific exposure development;
- a substitute for dimensional verification;
- standardized mechanical testing;
- final application qualification; or
- regulatory approval or certification of a final Product.
Final suitability depends on the relevant material, printer, processing conditions, geometry and application requirements.
SSF is a pre-selection and process-control framework. Final performance must always be validated under the relevant application conditions.
Next Step in Your Engineering Workflow
Use the links below to move from framework understanding to material selection, process calibration, empirical screening and final application evaluation.
The 3Dresyns® Structured Selection Framework (SSF) is a photopolymer pre-selection and process-control methodology connecting design intent, engineering material selection, comparative material positioning, exposure calibration, dimensional verification, failure diagnosis and empirical mechanical screening. SSF supports controlled material implementation but does not replace final application-specific validation.
For technical guidance contact info@3Dresyns.com