3Dresyns Quality Control
3Dresyns Quality Control is built around curing behavior, traceability, formulation consistency and printer-condition matching for made-to-order uni- and multifunctional 3D resins.
Photopolymers are not static materials. Their real performance depends on how they respond to light, exposure conditions and printer-specific process variables. For this reason, 3Dresyns quality control focuses on curing fingerprints and process-relevant validation, not only on static formulation checks.
Made-to-order multifunctional 3D resins
3Dresyns offers made-to-order uni- and multifunctional 3D resins through a platform designed for broad multifunctionalisation.
This includes several thousand colour options and multiple functional additives selected from a broad portfolio, allowing the creation of billions of unique, ready-to-use resin variants manufactured on demand according to a defined formulation recipe.
Multivariable design supported by Artificial Intelligence
AI as a decision-support layer
3Dresyns uses multivariate, multivariable, multi-response, predictive, interpolative and corrective Artificial Intelligence systems to support the design of online proof-of-concept materials.
Integrated formulation logic
These systems combine formulation variables, curing kinetics and printer specifications to improve consistency and reproducibility across highly customised products.
Human supervision
All AI-assisted outputs are reviewed under expert human control. The objective is not automation without oversight, but better consistency in a complex multivariable materials space.
Quality control of made-to-order 3D resins
3Dresyns performs appropriate quality control checks to ensure that each manufactured lot conforms to the defined formulation recipe of its corresponding product reference.
The primary QC method consists of measuring the curing kinetics of each made-to-order resin by generating its curing rate table, also referred to as a curing or printing fingerprint.
Curing rate table and curing fingerprint
The curing rate table is generated by exposing the resin at a defined wavelength, typically 405 nm, and at a controlled light power, for example 1–8 mW/cm², across multiple exposure times such as 5, 10, 15, 20, 25, 50, 75 and 100 seconds.
For each exposure time, the cured thickness is measured. The resulting thickness-versus-time profile represents the curing fingerprint of that specific resin lot under defined conditions.
Important
The curing fingerprint is both a quality control and optimisation tool. It shows how a resin responds to light under defined conditions and enables meaningful correlation with different printer powers and printing environments.
Quality control framework at a glance
| QC area | What 3Dresyns controls | Why it matters | Practical outcome |
|---|---|---|---|
| Formulation conformity | Each made-to-order lot is checked against the defined formulation recipe and product reference. | Custom materials require lot-level consistency, especially when many variables are combined. | Greater confidence that the supplied resin matches the intended multifunctional design. |
| Curing kinetics | Curing rate tables are generated as lot-specific curing fingerprints under defined wavelength, power and exposure conditions. | Photopolymer performance depends on curing response, not only nominal composition. | More reliable prediction of printability, exposure needs and process behaviour. |
| Traceability and retention | Representative samples of each lot are retained for at least one year. | Stored samples allow follow-up analysis if shelf-life or quality questions arise later. | Improved traceability, investigation capability and long-term technical support. |
| Printer-condition matching | Customer-measured printer power can be used to generate curing data closer to the real printing environment. | Printer light output varies substantially between machines and over time. | Faster parameter optimisation and better transferability to the user’s actual printer. |
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Sample retention and traceability
Representative samples of each made-to-order production lot are retained for a minimum of one year. These retained samples are used to monitor shelf life and to re-evaluate curing kinetics or other relevant properties if quality-related questions arise.
Retention samples are especially important because printer light power naturally decreases over time, which can affect printability and curing behaviour.
Optional ordering of the curing rate table
The curing rate table can be optionally ordered together with a resin. The cost of this optional service is 50 EUR.
The table provides cured thickness values measured at a light power representative of the selected DLP or LCD printer, helping accelerate optimisation of exposure settings.
Light power matching
For maximum accuracy, 3Dresyns recommends measuring the printer’s actual light power using the same instrument used internally: Chitu Systems Digital UV Light Meter.
This light meter is selected for its affordability and suitable spectral range, 402–407 nm, which closely matches the 405 nm wavelength used by most SLA, DLP and LCD printers.
When the customer provides the measured printer power, 3Dresyns can perform light power matching, allowing the curing rate table to be generated under conditions that closely replicate the customer’s real printing environment.
This significantly accelerates the identification of optimal exposure parameters. See also: Fast and accurate Instructions for Use (IFU) for DLP & LCD printers.
Why this matters compared with standard QC
| Traditional QC logic | Main limitation | 3Dresyns QC logic | Resulting advantage |
|---|---|---|---|
| Checks static formulation conformity only | Does not fully capture how the resin behaves during printing | Links formulation conformity with curing fingerprint measurement | Better alignment between material quality and real process behaviour |
| Assumes one printer condition is representative | Printer power varies between machines and degrades over time | Supports light power matching and printer-specific synchronisation | Faster, more relevant optimisation for the end user’s printer |
| Treats quality as a material-only issue | Photopolymer performance depends strongly on exposure conditions | Treats QC as a formulation-plus-process control problem | Higher reproducibility in practical printing workflows |
| Limited post-sale technical traceability | Difficult to investigate later questions without retained samples | Retains lot samples for at least one year | Improved follow-up, traceability and quality troubleshooting |
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Human expertise combined with Artificial Intelligence
The kinetic data obtained from curing rate tables and other quality control measurements are used as inputs for 3Dresyns’ AI-supported multivariable design systems.
These systems correlate formulation variables, curing behaviour and printer specifications to generate predictive performance profiles for each resin. All AI outputs are reviewed and validated by human experts.
Outcome
Artificial Intelligence, under human control, is used to continuously improve the consistency, performance and reliability of 3Dresyns uni- and multifunctional 3D resins.
Need a curing fingerprint for your printer and resin?
3Dresyns Quality Control is designed to connect formulation integrity with real curing behaviour, making optimisation faster and more reproducible in practical SLA, DLP and LCD workflows.
Explore the curing rate table or review the fast and accurate IFU for DLP & LCD printers.