Self-Repair & Interlayer Welding — Additives for 3D resins

Choose your repairable additive route

Use the routes below to navigate the collection by repair logic, booster role and release-assisted rework concept.

• Interlayer welding and self-repair concepts for 3D-resin formulation development.
• Supports improved layer bonding, enhanced toughness and crack resistance depending on system.
• Useful for better durability under cyclic stress and long-life functional-part tuning.
• Suitable for advanced formulation R&D in engineering, molds & tooling and selected optics & photonics projects.

Typical use scenarios across the collection

This collection is relevant for projects where repairability and interlayer cohesion are part of the material-performance objective.

• Durable functional prototypes: parts designed for longer useful life under repeated use.
• Parts under repeated loading: components exposed to cyclic stress where damage tolerance matters.
• Interlayer strength improvement projects: formulations targeting better bonding between printed layers.
• Repairable part concepts: materials designed around rework or recovery logic.
• Advanced formulation R&D for toughness and longevity: development programmes seeking stronger, longer-lasting printed parts.

How to choose the right self-repair or welding additive

Select the most suitable route according to whether the project needs direct self-heal action, repair boosting, interlayer welding or release-assisted rework.

• Need a direct self-heal temperature-targeted route → choose 3D-ADD SH
• Need a photo/thermal assist repair booster → choose 3D-ADD SHB1 Self-Heal Booster
• Need stronger interlayer welding and rebonding → choose 3D-ADD ReBond Weld
• Need release-assisted rework or circular repair concepts → evaluate Circular RePrint DP80 or DP150

• Prioritise stronger interlayer cohesion → start with ReBond Weld
• Prioritise self-repair activation → start with SH or SHB1 depending on repair mechanism design
• Prioritise release-assisted rework logic → start with DP80 or DP150 depending on temperature window

Decision tree summary

Use this simplified engineering logic before detailed formulation validation.

• Need self-heal behavior → SH
• Need a repair booster → SHB1
• Need interlayer welding → ReBond Weld
• Need release-assisted rework → DP80 / DP150

Then validate the final route under the intended resin family, additive loading, exposure strategy, thermal conditions and repair protocol.

Temperature-targeted self-heal additive

For formulations designed around direct self-repair logic activated through a temperature-targeted route.

Photo / thermal assist self-heal booster

For projects that require a booster-type additive supporting self-repair or assisted recovery concepts.

ReBond interlayer welding additive

For formulations focused on stronger bonding between printed layers and repairable rebonding behavior.

Warm-release and high-temperature release additive concepts

For projects where repair, release or rework concepts are linked to additive-assisted circular or detachable workflow logic.

A repair-mechanism platform rather than a single functional modifier

This collection is structured around multiple repair-related concepts, allowing users to approach durability from different formulation angles: direct self-heal, boosted repair, interlayer welding and release-assisted rework.

• SH covers the direct self-heal route.
• SHB1 covers the repair-booster route.
• ReBond Weld covers the interlayer-welding route.
• DP80 / DP150 extend the portfolio toward release-assisted rework concepts.

The right repair route depends on the target failure mode, not only on the additive name

These additives are most useful when the repair objective is defined first: stronger bonding between layers, direct self-heal response, assisted recovery or controlled rework via release logic.

In practice, the correct path is to define the intended repair mechanism first, then validate the additive under the intended resin chemistry, loading and process conditions.

Documentation, technical selection help and project support

Use the resources below to move from additive preselection to technical discussion, formulation planning and advanced development support.

Select the right repair route and validate the full durability workflow

Use the route-based navigation above to identify the most relevant self-repair or interlayer-welding additive, compare candidates in the technical overview table, and move forward with formulation-specific validation for stronger and more repairable printed parts.