Fast Instructions for Use (IFU) for Direct Printing of Sintering Ceramics, Metals and Exotic Materials

These Fast Instructions for Use (IFU) provide a rapid starting workflow for 3Dresyn® direct-printing systems for sintering ceramics, metals and exotic materials using SLA, DLP, LCD and MSLA vat photopolymerization technologies.

This Fast IFU is intended for practical first implementation, rapid calibration and structured formulation tuning. It does not define universal fixed processing conditions and does not replace user-side validation, thermal qualification or application-specific verification.

1) Scope and valid product family

This Fast IFU applies to the 3Dresyns® collection Direct printing of sintering ceramics, metals, and exotic materials and is valid for routes based on:

• 3Dresyn CDP
• 3Dresyn CDP-WS
• 3Dresyn CDP-LDT WS
• 3Dresyn UDP-LDT WS

The selected route must be aligned with the target powder type, debinding logic, thermal window and final sintered target.

2) Recommended basic starting formulation logic

For zirconia-, alumina- and related ceramic routes, one recommended basic starting formulation is:

This route is a starting formulation only and must be validated for the selected powder, printer and application.

Recommended additive fine tuning

• FT1: adjust in 0.1% intervals
• LB1 Bio: adjust in 0.2% intervals

This structured tuning route is recommended in order to control curing kinetics, printability and practical resolution.

Optional use of ASC1

Where the suspension shows problematic sedimentation or rheological instability, users may consider 3D-ADD ASC1 anti-sedimentation additive in order to stabilise the powder-loaded system.

Important limitation: ASC1 may improve printing stability, but because of its resistance to thermal degradation it may also act as an impurity in the final sintered ceramic or metal. Its use must therefore be validated against the purity and thermal requirements of the final part.

3) Build-platform adhesion strategy

Before printing, users are strongly recommended to apply several layers of 3Dresyn AP1 adhesive primer on the build platform in order to improve adhesion of the powder-loaded suspension.

4) Recommended printers and process control

Recommended printer categories include:

• Admatec systems,
• SLA, DLP and LCD printers with light-power control,
• systems with temperature control.

Temperature control is strongly recommended because heavily filled systems are sensitive to rheology changes, recoating behaviour and process stability.

Real light power should be treated as a critical variable. Exposure times must not be interpreted as universal settings because they depend strongly on the real power available at the vat.

5) Rapid starting printing logic

For direct-printing systems for sintering ceramics, metals and exotic materials, the most useful quick-start route is:

1. Select the correct 3Dresyn direct-printing resin route.
2. Prepare and homogenise the powder-loaded formulation.
3. Prime the build platform with AP1.
4. Keep temperature controlled.
5. Select a conservative layer strategy.
6. Use Fast CRT to identify the likely exposure interval.
7. Validate with 3Dtest1 and then 3Dtest2.

6) Fast CRT logic

The quickest structured way to identify the likely working exposure interval is to use a fast CRT.

Recommended fast CRT points: 5 s, 10 s and 15 s.

• Measure cured thickness at 5 s, 10 s and 15 s.
• Evaluate cured thickness, green strength and practical adhesion behaviour.
• Identify the likely working interval.
• Add 1–2 extra points only in the interval that matters for the selected powder-loaded system and target layer thickness.

7) Practical interpretation of first-print behaviour

• Under-cured: weak green body, insufficient strength, poor practical robustness → increase exposure or re-evaluate formulation and temperature.
• Well cured: acceptable green strength, controlled adhesion, stable separation, acceptable detail retention.
• Over-cured: excessive adhesion, detail loss, higher stress during separation → reduce exposure.

8) Initial validation prints

Once the likely working interval has been identified, validate it using the 3Dresyns calibration files.

• Download 3Dtest1 calibration STL file
• Download 3Dtest2 calibration STL file

3Dtest1 should be used first to verify basic printability, adhesion logic and exposure appropriateness.

3Dtest2 should then be used to evaluate supports, XYZ printability and Z behaviour.

9) Cleaning, drying and thermal route

Printed green bodies must be processed through a controlled route including:

• washing,
• complete drying,
• debinding,
• sintering.

Drying before thermal treatment is mandatory. Debinding and sintering must be validated by the user for the selected resin route, powder system, geometry and application.

10) Governing principle

This Fast IFU provides a rapid implementation route only. Final performance depends on the complete material–printer–process–post-processing–thermal treatment chain and must be validated by the user.

The most important practical rule is this: select the correct route from the direct-printing collection, use AP1 on the build platform, establish a fast CRT at 5 s, 10 s and 15 s, fine tune FT1 in 0.1% steps and LB1 Bio in 0.2% steps, use ASC1 only where the stabilisation benefit justifies the possible impurity risk after sintering, and validate with 3Dtest1 and 3Dtest2.

11) Related documentation

• Direct-printing systems overview
• Curing Rate Control System (CRT)
• Structured Calibration & Dimensional Control
• Resources

12) Need technical support?

For direct-printing formulation support, printer qualification, CRT definition, structured calibration or advanced optimisation, contact info@3dresyns.com.