Ultimaker, the global leader in professional 3D printing, has launched the beta for Ultimaker Cura 5.0, the latest version of its free, open source, slicing software. Unique applications in design, architecture, engineering and metal 3D printing have been enabled by the newest version of Ultimaker Cura. 

Ultimaker Cura 5.0 was announced at the 21st April Ultimaker Showcase and it includes an enhanced slicing engine that sets a new threshold for finer and faster 3D prints. The newly developed variable line width capability of this slicing engine improves its ability to print thin walls and fine details. Parts printed with this engine will also be stronger. Other improvements include faster print profiles for owners of Ultimaker printers, support for Apple M1 chips, and more.


“Ultimaker Cura 5.0 represents the biggest leap forward in print quality that the software has ever seen. This is the start of a true revolution in 3D printing technology. We believe that even those who have looked at 3D printing before and concluded that it may not be ready for their use, today it is time for them to look again. Until now, you had to make your design work for 3D printing. It’s time to turn the table… from designing for 3D printing, to 3D printing for design.” – Miguel Calvo, Chief Technology Officer (CTO) at Ultimaker

Thinner walls and finer details

The new slicing engine in Ultimaker Cura 5.0 allows for the use of variable line width when slicing a 3D model. Previously, the line width used when slicing a file was decided by the diameter of the nozzle and the line width settings used. Once chosen and sliced, the line width would be consistent throughout the part. 

This means that if part of a print was two-and-a-half lines thick, two lines would be used, and a small gap would be left between them. Small details of less than one line thick would not be printed at all. This has been a common shortfall for FFF 3D printing in general and Ultimaker Cura 5.0 solves it. With the new and improved slicing engine the width of lines are instead increased and decreased to create the most efficient tool patch and to most accurately print fine details. The result is fewer gaps on the inside of parts and better quality when printing thin walls and fine details.

“Particularly interesting for a designer are the thin walls, which allow us to make dimensionally precise objects. On top of that, the surface finish is so much better. We are still at the beginning of a revolution, not so much in rapid prototyping, but more in rapid manufacturing. The technology is mature now and we can print final parts, for instance unique pieces, custom objects and tailor-made applications for specific needs. 3D Printing is going to be the manufacturing technology of the 21st century.” – Tom Dixon – Award-winning designer

“Fine detail and small features are critical to how architectural designers accurately communicate design decisions. And while much can be done by hand using traditional model building practices, it is much better for the speed of the process when you can draw on software to deliver what you need without lengthy intervention. I’ve been putting the new Cura 5.0 version through the paces in my recent projects and have been surprised by the features that my 3D printers can now achieve with this technology. This is a big development for the entire architecture industry”. Carlos Castillo – an architectural designer and fabricator

“With the new version – Ultimaker Cura 5.0 – a higher level of detail for small features is easily achievable. Customers 3D printing metal parts will benefit from the easy-to-use auto-scaling function built into the software workflow. Together, these improvements mean that cost-effective production of metal parts has never been easier” Tobias Rödlmeier – Business Development Manager – Metal Ecosystem at BASF Forward AM

Stronger parts

The variable line width capabilities of the new slicing engine in Ultimaker Cura 5.0 results in fewer gaps on the inside of printed parts. This means parts are more solid, and therefore stronger. The biggest improvement in strength will be seen when printing thin walls where fixed line width would previously have resulted in walls with internal gaps and in some cases, walls that would not print correctly at all. 

The improved printing of thin walls brings parts printed with Ultimaker Cura 5.0 closer than ever to the strength and quality of those produced using injection molding.

“Cura is evolving and there is much more freedom in the design for FFF stage, because fewer limitations have to be considered in CAD, so the software is less of a limiting factor towards the end result. Thin walls, and the kind of small design features that are often featured in injection molded parts, are created much more efficiently and this results in applications being produced in an improved way in 3DP” – Steve Cox – Engineer and 3D printing advocate

Faster print profiles

Print profiles available to users of Ultimaker printers have been updated to make use of the improved capabilities of Ultimaker Cura 5.0. The result is print time reductions of up to 20%. 

Other improvements include: 

  • Apple M1 chip support
  • A streamlined Ultimaker Marketplace integration
  • An improved UI 

You can download Ultimaker Cura 5.0 beta here!

New possibilities and new applications

The Showcase featured innovators and thought-leaders from the 3D printing community in design, architecture, engineering and metal 3D printing who demonstrated unique applications that have been enabled by the newest version of Ultimaker’s slicing software.

The Showcase is still available to be watched here, for anyone who missed the original presentation and announcement of Cura 5.0.

About Ultimaker
Established in 2011, Ultimaker is on a mission to accelerate the world’s transformation to flexible, empowering and sustainable solutions. 380 employees deliver a platform that enables customers to take full advantage of the unique Ultimaker Ecosystem that offers the largest diversity of 3D printing products and services in the industry. Ultimaker provides a seamless integration of hardware, software and materials that simply works.