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    Instructions for Use (IFU) & Printing Parameters for closed mode laser-based SLA systems (Formlabs-type platforms)

    These guidelines provide printer-specific starting guidance for using 3Dresyns® photopolymer resin systems on Formlabs and other closed-mode laser-based SLA platforms.

    This page should be used as a practical supplement to the general Instructions for Use (IFU) & Printing Parameters for DLP & LCD printers where relevant, together with any printer-specific workflow documentation applicable to closed SLA systems.

    1) Scope and limitations

    These guidelines apply to the use of selected 3Dresyns® photopolymer resin systems on Formlabs and similar closed-mode laser-based SLA printers.

    They are intended as a practical starting framework for users working with:

    • Form 2 open mode workflows where available,
    • Form 3 or similar workflows using compatible cartridge or universal cartridge systems,
    • closed SLA platforms where printing parameters are constrained by predefined material profiles.

    Limitations:

    • These guidelines do not define universal or fully validated settings.
    • 3Dresyns does not control printer firmware, proprietary slicing logic, laser strategy or closed material algorithms implemented by third-party printer manufacturers.
    • Users remain responsible for validating final printability, dimensional accuracy and post-processing for the intended application.

    2) Standard starting settings

    • Z layer thickness: typically 50–100 microns. Lower or higher layers may also be printable depending on resin family, printer workflow and target quality level.
    • Form 2 (open mode): many basic 3Dresyns can be screened using the Formlabs Clear v2 profile with resin poured directly into the vat.
    • Form 3: a practical starting route is to use Standard Clear or Grey settings with a compatible universal cartridge system such as ProtoART.
    • Practical interpretation: in closed-mode workflows, the selected profile acts as a reference exposure framework, not as a guarantee of optimum curing for every 3Dresyns formulation.

    Some specific 3Dresyns may require fine tuning with Fine Tuner FT1 and/or Fine Tuner LB1 Bio to match specific target requirements such as special Z layers, improved speed or improved dimensional control.

    3) Basic vs multifunctional resins

    3Dresyns® materials can be divided into two practical groups: basic and multifunctional.

    • Basic 3Dresyns are the standard resin systems before adding optional functionality during ordering.
    • After adding functional additives, basic resins become multifunctional 3Dresyns and may require more control of printing settings and more structured validation.

    Because 3Dresyns offers a very broad design space including many colours and optional functional additives, the resulting combinations may behave differently even when the same closed printer profile is used.

    If you want to keep the workflow as simple as possible: start with the basic resin version without optional functional additives. If you need specific performance, use the multifunctional route and validate the workflow more carefully.

    4) Why closed-mode SLA printers may require fine tuning

    Closed-mode or partially closed laser-SLA systems typically do not allow the same level of direct exposure control available in open-material workflows. In these systems, the user often works indirectly through:

    • predefined material profiles,
    • reference cartridge systems,
    • workflow matching to a nearest equivalent resin,
    • fine tuning of resin behaviour rather than direct tuning of all print parameters.

    As a result, optimum printability may require controlled modification of resin kinetics and optical behaviour rather than simple manual adjustment of exposure time alone.

    5) Fine tuning for print speed and resolution

    Closed-mode printers may require tuning to reach optimum speed, robustness and resolution at the selected specifications.

    • Fine Tuner FT1: general-purpose photo-accelerant used to increase effective printing speed or compensate for insufficient cure. Typical dosing steps: 0.1–0.2%.
    • Fine Tuner LB1 Bio: resolution increaser used to reduce light bleeding, reduce overcuring and improve XYZ detail. Typical dosing steps: 0.3–0.4%.
    • Ultra-low water absorption version: LB1 Bio ULWA.

    Practical rule:

    • If the resin behaves too slowly or shows insufficient cure, FT1 may be introduced gradually.
    • If the resin prints but shows excessive bleeding, excessive cure spread or poor detail, LB1 Bio may be introduced gradually.

    Additional fine-tuning additives and consulting are available for advanced optimisation.

    6) Calibration workflow using 3Dtest files

    • Step 1: Select the target Z layer thickness. Typical practical range: 10–100 microns. A common high-resolution starting point is 50 microns.
    • Step 2: Select the support strategy, including support position, density and tip size.
    • Step 3: Print 3Dtest1 without supports to confirm basic printability and screen material behaviour.
    • Step 4: Print 3Dtest2 with supports to evaluate XYZ resolution and dimensional accuracy under a more demanding condition.

    3Dresyns calibration files

    7) Quick failure hints

    • If the whole print detaches from the build platform: increase effective curing energy. In open workflows this may mean increasing energy dosage. In closed Formlabs-type workflows this often means adding FT1 in small steps such as 0.1%.
    • If the part prints partially and then fails: review support strategy and curing robustness. Depending on behaviour, FT1 may be adjusted upward or downward.
    • If the part becomes too brittle or shows excessive cure spread: reduce excessive cure by lowering FT1 if present and, where needed, introducing LB1 Bio gradually.
    • If the print completes but detail is poor: review layer thickness, support strategy and optical fine tuning rather than assuming the workflow is already optimal.

    8) Basic tools

    • Digital caliper or micrometre
    • Weighing balance, especially when dosing additives

    These tools support practical calibration, dimensional checking and controlled additive dosing.

    9) Cleaning and post-curing

    Cleaning and post-curing must follow the applicable resin-family and application-specific IFUs.

    Use the relevant documentation where applicable:

    Drying before final post-curing is mandatory. Deviation from qualified cleaning and post-processing workflows may affect surface quality, mechanical performance and long-term material behaviour.

    10) Governing principle

    Closed-mode SLA workflows should be treated as matched-profile systems, not as fully open calibration environments. Final printability depends on the complete material–printer–profile–post-processing system and must be validated by the user for the intended application.

    11) Consulting

    You are welcome to contact us at: info@3dresyns.com

    From prototyping to industrial production, performance depends on materials, calibration and process control