Powder Binders for SLS Cold Metal, Ceramic, Polymer & Exotic Materials Fusion

Choose your Cold Fusion binder family

Use the routes below to navigate the collection by binder logic, debinding route and intended material family.

• Cold-fusion powder binder concepts for metal, ceramic, polymer and exotic powder routes.
• Support for binder-assisted powder consolidation and green-part formation workflows.
• Coverage across solvent-debindable, water-debindable and high-temperature polymer-fusion routes.
• Selectable melting-temperature logic: lowest-melting solvent-debindable cold-printing (CF3), low-melting water-debindable (CF4), higher-melting non-hygroscopic water-debindable (CF2), and solvent-debindable routes (CF1, CF5).
• Useful for R&D, indirect sintering, advanced materials prototyping and experimental powder processing.

Typical use scenarios across the collection

This collection is relevant for teams designing binder-assisted SLS workflows where the powder is not printed alone, but integrated into a broader debinding and sintering route.

• Cold powder fusion R&D: exploratory development of binder-assisted SLS routes for non-standard powder systems.
• Binder-assisted powder processing: green-part creation with selected ceramic, metal, polymer or exotic powders.
• Indirect sintering workflows: routes where printed green parts are later debound and thermally processed.
• Cold Polymer Fusion: processing of high-performance polymers such as PEEK and PEKK under adapted binder logic.
• Advanced prototyping: experimental and engineering development where process tunability matters as much as final composition.

How to choose the right Cold Fusion binder

Select the most suitable route according to debinding method, melting temperature, target powder family and green-part handling requirements.

• Need a universal solvent-debindable route → 3D-POWDER CF1 SD Bio
• Need a universal water-debindable route with higher melting temperature and non-hygroscopic handling → 3D-POWDER CF2 WD Bio (Tm 160–166 °C)
• Need a low-melting water-debindable route for gentle, low-temperature fusion → 3D-POWDER CF4 WD Bio (Tm 55–60 °C)
• Need the lowest-melting solvent-debindable binder for cold printing on minimally heated beds → 3D-POWDER CF3 SD Bio (Tm 55–65 °C, self-sufficient, no co-binder required)
• Need Cold Polymer Fusion for high-performance polymers such as PEEK or PEKK → 3D-POWDER CF5 SD Bio
• Need the matching liquid route for cold eco debinding → Debinding Solution DS1 Bio

• Prioritise eco solvent debinding → CF1 SD Bio plus the relevant debinding solution
• Prioritise cold printing on minimally heated beds via the solvent route → CF3 SD Bio (lowest-melting, self-sufficient, no co-binder)
• Prioritise water-debindable binder logic → CF2 WD Bio (higher Tm, non-hygroscopic) or CF4 WD Bio (low Tm) depending on melting and handling needs
• Prioritise higher-temperature polymer-fusion strategy → CF5 SD Bio for CPF routes such as PEEK and PEKK

Decision tree summary

Use this simplified engineering logic before detailed process validation.

• Need broad ceramic / metal / exotic powder flexibility → CF1 SD Bio or CF2 WD Bio
• Need low-melting, gentle water-debindable fusion → CF4 WD Bio
• Need cold printing on minimally heated beds (solvent route, no co-binder) → CF3 SD Bio
• Need a binder tailored to high-temperature polymer sintering logic → CF5 SD Bio
• Need controlled cold debinding support liquid → Debinding Solution DS1 Bio
• Choose the fusible co-binder by debinding route → PLA20-80 for water-debindable binders (CF2, CF4); Nylon 12 / 11 (or PP, PE) for the CF1 solvent route. CF3 is self-sufficient and needs no co-binder; CF5 is paired with CF2 for the PEEK/PEKK route. Optionally add crosslinked PMMA 20-50 as a sacrificial pore former for controlled porosity

Then validate the final route under the intended powder ratio, co-binder and pore former choice, printer mode, debinding medium, thermal ramp and sintering protocol.

Choosing the fusible co-binder and the optional pore former

The fusible co-binder is the polymer the laser melts and coalesces to build the green part and give it cohesion and toughness. The correct choice is governed by the binder's debinding route. A separate, optional pore former (crosslinked PMMA) is added only when controlled porosity is wanted — it is not a fusible phase.

• The binder dissolves in water, so the co-binder must not be water soluble; PLA keeps the part shape while water extracts the binder.
• PLA is bio-based, melts and coalesces under the laser, burns out clean and ash-free below ~360 °C, and adds toughness that offsets the natural brittleness of the crystalline binder.

• No aqueous extraction step, so the co-binder need not resist water; Nylon is the native SLS powder with an already-validated processing window.
• Nylon yields tough, machinable green parts and is compatible with high-temperature polymer routes (CF5). Polyolefins (PP, PE) may also be used depending on strategy.

• A sacrificial crosslinked spherical PMMA that does not melt: it holds its spherical shape under the laser and burns out cleanly during thermal debinding, leaving smooth, controlled, near-spherical pores.
• Add 0-10 wt% when controlled porosity (filters, scaffolds, porous parts) or faster debinding of thicker parts is required; omit when maximum sintered density is the goal.

Simple rule: water-debindable route → PLA20-80; solvent-debindable route → Nylon; optional crosslinked PMMA 20-50 as pore former for either route. The co-binder gives green-part cohesion; the PMMA pore former does not melt and is burned out — distinct roles.

CF3 exception: CF3 SD Bio is self-sufficient — its ultra-low melting point lets the laser fuse it directly to give green-part cohesion, so it needs no co-binder. A co-binder is optional, only for demanding powder systems.

Universal solvent-debindable binders

For Cold Fusion workflows where solvent debinding, broad powder compatibility and controlled powder wetting are priorities. Recommended fusible co-binder: Nylon 12 / 11 (or PP, PE) — except CF3, which is self-sufficient and needs no co-binder.

Water-debindable Cold Fusion binders

For workflows prioritising water-based debinding. CF2 offers a higher melting temperature (160–166 °C) with non-hygroscopic handling and high resolution; CF4 offers a low melting temperature (55–60 °C) for gentle, low-temperature fusion. Recommended fusible co-binder for both: PLA20-80; optional crosslinked PMMA 20-50 as a sacrificial pore former when porosity is required.

Binder route for high-performance polymer fusion

For CPF workflows involving high-performance polymers such as PEEK and PEKK where low thermal degradation is important for the binder strategy. Recommended fusible co-binder: Nylon 11 / 12 or a high-temperature co-binder.

Cold eco debinding liquid

For cold debinding stages associated with solvent-debindable binder systems (CF1, CF3, CF5) and related advanced material workflows.

Fusible co-binder powders and optional pore former

The fusible co-binder melts and coalesces under the laser to build the green part. Choose by debinding route: PLA20-80 for water-debindable binders (CF2, CF4); Nylon or polyolefins for the CF1 solvent route. CF3 is self-sufficient and uses no co-binder; CF5 is paired with CF2 for the PEEK/PEKK route. The crosslinked PMMA 20-50 is the optional sacrificial pore former for any route.

Note: PLA20-80 is the recommended fusible co-binder for water-debindable binders (CF2, CF4) because it is not water soluble and survives aqueous debinding while the binder dissolves, while melting and coalescing under the laser to give the green part its cohesion. The crosslinked PMMA 20-50 is an optional sacrificial pore former, not a fusible co-binder.

A process-oriented binder platform rather than a single-material offer

This collection is structured around Cold Fusion workflow logic, not just around isolated products. It combines binder systems, debinding support and fusible cobinder references so users can move from conceptual route selection to practical formulation planning.

• CF1 SD Bio covers the universal solvent-debindable route.
• CF3 SD Bio (Tm 55–65 °C) is the lowest-melting solvent-debindable binder for self-sufficient cold printing on minimally heated beds, requiring no co-binder.
• CF2 WD Bio (Tm 160–166 °C, non-hygroscopic) and CF4 WD Bio (Tm 55–60 °C) cover water-debindable strategies with different melting and handling logic.
• CF5 SD Bio extends the platform toward Cold Polymer Fusion of higher-temperature polymer systems.
• DS1 Bio supports the debinding stage for solvent-debindable binders.
• The fusible co-binder (PLA20-80 for water routes, Nylon for solvent routes) melts under the laser to form the green part; an optional crosslinked PMMA 20-50 pore former can be added for controlled porosity.

The right binder depends on powder family, debinding route, melting temperature and co-binder choice

Choose solvent-debindable systems when eco solvent removal and broad compatibility are priorities (including CF3 for the lowest-melting, self-sufficient cold-printing route on minimally heated beds), water-debindable systems when water-based debinding is preferred (CF2 for higher Tm and non-hygroscopic handling, CF4 for low-temperature fusion), and CPF-specific binders when working with high-performance polymers such as PEEK or PEKK. Match the fusible co-binder to the route: PLA20-80 for water-debindable, Nylon for the CF1 solvent route; CF3 needs no co-binder; add optional crosslinked PMMA 20-50 as a pore former when porosity is required.

Final suitability should always be validated under the intended powder ratio, co-binder, optional pore former, SLS printer configuration, debinding medium, thermal debinding schedule and sintering conditions.

Documentation, technical selection help and development support

Use the resources below to move from binder preselection to workflow validation, technical discussion or custom development.

Select the right Cold Fusion binder route and validate the full workflow

Use the binder-family navigation above to identify the most relevant Cold Fusion system, match the fusible co-binder to the debinding route, compare candidates in the technical overview table, and move forward with powder-specific validation for metal, ceramic, polymer or exotic-material processing.