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Additive Manufacturing tool for injection moulding

Additive Manufacturing

Some parts should never see a mould. We produce them additively, and guide you to the right technology.

In short: additive manufacturing at Carmo means finished parts, not only prototypes: customised parts in batches of one, very small series, and geometries no mould can release. A part that outgrows printing moves to injection moulding, a switch planned from the start.

When additive is the right production route

Where a mould is the wrong tool, we produce the part additively. Three cases:

  • Geometry no tool can release: internal channels, lattices, shapes that would need a mould in six pieces
  • Batch size of one: customised products such as scan-to-fit items, each unit different from the last
  • Very small series: a few dozen a year, where the lifetime volume never pays for a tool
Three cases for additive production: un-mouldable geometry, batch size of one, very small series
3D-printed mould tooling curing at Carmo

What we produce, and how it is documented

Our printers support the moulding line, and they do a second job: finished parts.

  • Mould tooling for Carmo Print Moulding: functional prototypes in your production material, in days
  • Jigs, fixtures and grippers for our automated production cells
  • Finished parts where moulding does not fit; a narrower material palette than moulding, scoped per project against the function the part must serve

For additively produced parts, documentation and traceability are agreed per project. The certified QMS engages where a part moves to injection moulding. If your volumes already point to a tool, start on the moulding side: injection moulding of plastic components.

Prototypes in your production material: Carmo Print Moulding

When the part will be moulded but the design might still change, we 3D-print the tool and mould the part in your actual production material, so you test function and fit on real parts before any capital goes into steel. That is Carmo Print Moulding, our own hybrid of additive manufacturing and injection moulding. How Carmo Print Moulding works →

Additive manufacturing plus injection moulding equals Carmo Print Moulding

Which route you start on, and where it goes

The quantity picks the route. Start where your numbers are today and move up when they grow. One engineering team carries the part across the switch: that is how Carmo works as a development and production partner.

Additive productionPrinted tool (Carmo Print Moulding)Steel tool
Best forone-offs, customised, tiny seriesprototypes, pilot and bridge runsseries production
Quantity1 to a few dozen a yeartens to a few hundredthousands to millions
Geometryany shape, even un-mouldablemouldablemouldable, tool-optimised
Materiallimited paletteyour production plasticyour production plastic
Costno tooling, high per partlow tooling, moderate per parttooling, lowest per part
First partsdaysdaysweeks
ISO 13485 scopeoutsideoutsideinside, from validation builds

Volumes growing? The switch to a printed tool or steel is planned as a process change from day one. Where it sits on the volume curve: scalable production. Where your specification requires it, the moulded part is then produced in Carmo’s ISO Class 8 cleanroom environment.

Ready to discuss your project?

Send the part or the idea and the quantity you expect. We'll tell you whether it should be printed, moulded from a printed tool, or moulded from steel, and what each route costs you over the product's life.

Anders Johnsen
Anders Johnsen
VP, R&D and Technology
+45 4912 2102

Frequently asked questions

What we produce additively

Does Carmo 3D-print finished parts, or only tooling?

Both. The printers feed the moulding line (3D-printed mould tooling for Carmo Print Moulding, jigs, fixtures and grippers) and they produce finished parts where injection moulding does not fit: very small series, customised batch-size-one products such as scan-to-fit items, and geometries no mould can release. Additive production sits outside the certified ISO 13485 scope; the QMS engages where a part moves to injection moulding. When volumes grow, the part switches to a printed tool or steel, planned from the start.

Does Carmo offer a 3D print service?

Yes, for parts with a product behind them. Carmo 3D-prints end-use components in very small series, customised batch-size-one products and geometries no mould can release, and 3D-prints mould tooling (Carmo Print Moulding) so you get prototypes in your actual production material. Small-series production today, with a route to injection moulding planned from the start when volumes grow, is part of the service.

Is additive manufacturing only for prototypes, or also for production?

Also for production. Direct 3D printing of end-use components is the right path where lifetime volumes never justify a tool, where the product is customised one at a time, or where the geometry cannot be moulded. Prototypes and bridge or pilot quantities in your actual production material take a different route: Carmo Print Moulding, which 3D-prints the tool and moulds the part. The decision between additive and injection moulding turns on volume, geometry, material and lifecycle, and is settled with the engineering team during scoping.

What materials can Carmo use for additive manufacturing?

For direct 3D-printed end-use parts the material palette is narrower than in moulding; we scope it per project against what the part has to do. For Carmo Print Moulding you get the same medical-grade and technical-grade thermoplastics Carmo runs in series production, including proprietary Carmo PVC recipes refined over decades: the materials you will qualify in your device file.

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Choosing the route

When does additive manufacturing make more sense than tooling?

When the quantity, the geometry or the pace of change would waste a tool: batch-of-one and customised products, series too small to pay for tooling, and geometries no mould can release. It also covers the Carmo Print Moulding cases: design-verification builds, late geometry tweaks and short pilot runs before a tool commit. Definitive steel tooling becomes the right answer once the design is locked and lifetime volume justifies the up-front investment.

What is rapid tooling, and how is it different from rapid prototyping?

Rapid tooling means making the mould quickly, often by 3D-printing the tool itself, so you can injection-mould real parts in days instead of waiting weeks for a machined steel tool. Rapid prototyping is the goal: a functional part, fast. Rapid tooling is one way to reach it. Carmo’s own method, Carmo Print Moulding, prints the tool and moulds your part in its actual production material, so what you test at prototype is what you ship at volume.

Segments

What role does additive manufacturing play for medical device projects?

It depends on the project. Additive manufacturing can compress the development cycle for medical components by delivering functional prototypes in production materials early; Carmo Print Moulding is the path most medtech-development projects use for this. Additively produced end-use parts sit outside the certified ISO 13485 scope. Whether prototype or printed components may be used in clinical testing or a regulated submission is your call under your QMS, made case by case on device classification, intended use, jurisdiction and pathway; regulated series parts move to injection moulding, where the certified QMS engages. The right next step is a scoping conversation against your specific application.

Why customers trust Carmo

Continuity

More than 80 years of continuous private ownership: one team from prototype to volume, no handover.

More about Carmo

Quality

ISO 13485-certified quality management and an ISO Class 8 cleanroom environment: components with the documentation your audit asks for.

Our quality assurance

Tenacity & know-how

You bring the problem; we bring the know-how to solve it. We don’t walk away from the hard ones. Hear it from our customers.

Hear from our customers