Split3r 1.2.0 RC is now available for download at the page Download & Patches by all customers (KickStarter and Purchaser).
This version installs alongside your current version and uses your current login credentials.
This version includes completed and validated features and fixes and is provided as a Release Candidate prior to the final 1.2.0 stable release, 2 beta features are also provided for test only (create cut plane and cut by plane)
Users are invited to report any remaining issues before the final release.
- Voxel resolution management has been added to help control memory usage on very large parts.
The following voxel resolutions are recommended:
These recommendations help prevent excessive memory consumption while maintaining acceptable geometric fidelity.
Autoshell now allows you to keep the internal solid, making it possible, for example, to print the core of a shell part using a different material.
A new option Keep External Shell has also been added to generate an external solid, corresponding to the discretized (faceted) shape of the part.
This feature was requested by several users who appreciated the visual appearance of faceted parts after printing.
File analysis processing time has been divided by 5.
The Analysis command has been fully rewritten to significantly improve performance.
A part that previously required 10 minutes 45 seconds in version 1.1.0 Beta is now analyzed in 1 minute 59 seconds on 1.2.0.
Progress bars have been added for all analysis stages, providing clear feedback during long operations.
A new option allows users to keep only the most important (largest) parts and automatically remove small parasitic pieces included in the file.
The Repair function has been fully redesigned and now provides three distinct repair options, allowing users to choose the most appropriate strategy depending on the geometry and origin of the file.
1. Repair using standard algorithms
This option first merges internal bodies (when technically possible), then repairs common mesh issues such as self-intersections, inverted faces, holes, and duplicated or overlapping faces.
This method successfully repairs the majority of files.
2. Repair using Split3r algorithms (organic parts)
This option can be applied after a standard repair if analysis still detects issues.
It is particularly effective on organic or scanned parts, but may slightly deform some mechanical parts.
3. Repair using Blender algorithms
This option is intended as a last alternative when previous repair methods do not produce satisfactory results.
Repairs can be executed individually (1, 2, or 3 only) or in sequence (for example, 1 followed by 2).
Repaired files are clearly identified:
Files repaired with method 1 are named R1
Files repaired with method 2 are named R2
Files repaired with method 3 are named R3
If multiple repairs are applied, file names reflect the sequence (e.g. R1-2)
Note: The original file is always preserved.
Due to the wide variety and geometric complexity of defects found in real-world files, there is currently no universal solution that can repair all files in every case.
This Repair command will continue to evolve over time, based on issues encountered by users.
Trusted & Verified : We are proud to announce that Split3r has successfully completed the official certification process.
Starting with Release Candidate 2 (RC2), all our executables and setup files now digitally signed.
Smoother Installation : Previously, some users experienced "False Positive" alerts from antivirus software or "Unknown Publisher" warnings from web browsers (like SmartScreen) during download. Thanks to this new accreditation, Split3r is now recognized as safe software from a verified publisher. You should no longer encounter these blocking warnings when downloading or installing the application.
Security Reminder : Ensure you are installing the genuine, signed version of Split3r, please make sure to download the setup exclusively from our official page: https://www.split3r.com/download/...
A completely redesigned licensing system has been implemented, now compatible with Windows, Linux and Mac OS.
Split3r can be installed on as many computers as necessary.
Split3r uses a flexible licensing system that allows each user to install the software on all the computers they own. To activate Split3r, the user simply enters the name and email address used during registration.
When the application starts, it checks online how many licenses are currently in use. Each license allows a limited number of simultaneous running instances, based on the number of seats the user has purchased. Once this limit is reached, Split3r cannot be launched on an additional machine unless another active instance is closed.
The same license will work across all supported platforms (Windows, Linux, and Mac OS) when they become available.
If a machine is already using a license and the user wants to free that slot, for example, to run Split3r at home while the office computer is still open, it is possible to revoke a license remotely.
This instantly releases the seat and allows the user to start Split3r on another device.
Folder reorganisation
Explode mode : Reset view
The Reset view function "R" button in Explode mode returns all parts to their original position (assembled model).
Disable Part Engraving
Option to disable part numbering (in the case of thin autoshells)
Adjust Text Height of Part Engraving
Possibility to adjust text height of part numbering
Automatic separation of multiple bodies
When trying to repair an STL/OBJ file containing multiple bodies, Split3r now displays a dialogue box allowing you to automatically separate them into a dedicated subfolder
This also means that you will not be able to split this file, you must correct it first
Tenons in the Workzone
Tenons used in the work area are now automatically saved in a folder of the workzone and scaled according to the scale selected for the model. You just need to print a full bed of these tenons.
New custom tenons added
We have expanded the set of available tenons options with several new models (please contact support@split3r.com if you need special tenons design)
MagnetTenons D06x10, D06x13 & D06x15 : Designed for use with standard neodymium magnets measuring Ø6 × 10 mm, Ø6 × 13 mm , Ø6 × 15 mm using two magnets per slot for improved retention and alignment. These connectors allow parts to be assembled securely while still enabling quick and easy disassembly thanks to the magnetic coupling.
For those planning to assemble printed parts using magnets, compatible magnets can be purchased in Europe here: supermagnete.com
WoodTenons D06x30, D08x40, D10x40 : Standard wooden-style tenons available in multiple diameters and lengths, providing strong mechanical joints compatible with common woodworking formats.
(please contact support@split3r.com if you need special tenons design or units mm/inches design)
New tenon calibration workzone
A dedicated calibration workzone is available in: Documents\Split3r\Workzones\TenonsCalibration
This allows you to generate two parts, print them, and then check the assembly and fit of the tenons.
1. New “Analysis” function (basic and full version)
This feature performs a complete analysis of the input file and identifies geometric issues before any splitting operation.
It provides:
- A detailed list of detected geometric defects
- A graphical visualization of these issues directly on the model
- Automatically detecting and saving all individual bodies contained in the input STL file directly into the WorkZone. This will allow each body to be managed, analyzed, and cut independently when needed.
For more details, please refer to our news published on December 9.
2. New part rotation function (basic and full version)
Our original approach was to avoid duplicating features already available in slicers, and to focus exclusively on automating splitting operations.
However, several users rightly requested the ability to rotate a part directly in Split3r, for example to rotate a model by 45°, without having to return to the slicer for such a simple operation.
This functionality is now available in the Beta.
This is the first version of the rotation tool and it will likely evolve significantly based on your feedback and practical use cases.
3. New 3D cut plane creation tool (full version only)
You can now create and position cut planes freely in 3D space using the same 3D Gizmo than Rotate Part feature.
By clicking Create Plane, one or multiple 3D cut planes can be generated.
These planes are automatically named and stored in a Cut_Plane folder within the WorkZone and can be reused by the new Cut by Plane function described below.
One key advantage of this approach is that it allows you to cut only specific parts of a model (for example, a character’s arm), even when the cut plane would normally cut other parts of the geometry, such as the body, as is the case in many traditional CAD systems.
4. New “Cut by Plane” function (full version only)
To use this function:
1 - Set the file you want to cut as active (right-click or double-click)
2 - Make the desired cut plane visible
3 - Click Cut by Plane icon
Split3r will cut the selected part and:
Create a new file named [STL name]_001
Place the resulting cut part into a folder named [STL name]_001, containing the generated STL
Female/Female connectors are automatically added along the cut perimeter on both resulting parts.
This ensures that if a cut part is split again later, it can still be reassembled correctly with the original master part.
5. New WorkZone display with automatic tree structure
(full version only)
The WorkZone now features an automatically generated hierarchical tree view, making it easier to manage files, cut planes, and generated parts.
December 9, 2025
Feature Preview: The "Analyze" Command
The Reality of 3D Files
After analysing support tickets from over 2,500 users during the first six weeks of Split3r's beta release, we identified a consistent trend: over 80% of reported issues stemmed from problems inherent in the files themselves, rather than software or user error.
We all download models from popular repositories like Thingiverse, Cults3D, Printables, or Thangs.... While these platforms are great resources, many uploaded files are modeled for visual purposes rather than manufacturing. Consequently, they often carry severe geometric defects that make them unsuitable for operations like cutting or splitting.
Why we built the "Analyze" tool
Our current "Repair" functions can fix many issues, but software cannot magically fix every broken geometry without destroying the original shape. Sometimes, a file is simply too corrupt to be processed safely.
To help you identify these "dead-end" files before you waste time trying to split them, we are introducing a raw Analyze command. It doesn't modify your file, it simply exposes the truth about its geometry.
What it detects:
The tool scans for specific defects that cause boolean operations to fail:
Why Looks Can Be Deceiving:
The "Analyze" View
Standard 3D viewers are designed to make objects look smooth and beautiful. However, this visual polishing often hides critical structural defects. Below are two files that look nearly identical using standard Split3r shading. Yet, mathematically, they are completely different.
Example 1: The Trap
On the left, the file looks perfect. On the right, our Analyze command strips away the visual smoothing to reveal the "mathematical reality": a mesh with 16 bodies, full of self-intersections (orange), Body collisions (magenta) and open edges (red)
Result: This file will likely crash the Blender mathematical engine we use or produce a failed cut.
Example 2: The Verified Mesh Again
The standard view (left) looks just like the first one. But here, the Analyze view (right) confirms a clean, grey topology with 0 errors
Result: This file is geometrically sound and safe to process.
Found an unfixable file?
If the Analyze tool flags a file and you are unable to fix it using standard free repair tools (such as Windows 3D Builder, MESHINSPECTOR or MeshMixer, etc.), please submit a bug report.
We are actively gathering these complex edge-cases. While we cannot promise a fix for every corrupted file, studying your specific geometry allows us to investigate the issue and improve our algorithms for future updates.
Release Status
We want to get this diagnostic tool into your hands as soon as possible. We are pushing to include it as a Beta feature in the upcoming Year-End Release, included free of charge for all users (Basic and Full licenses).
December 5, 2025
Official Certification & Digital Signature
Trusted & Verified : We are proud to announce that Split3r has successfully completed the official certification process.
Starting with Release Candidate 2 (RC2), all our executables and setup files now digitally signed.
Smoother Installation : Previously, some users experienced "False Positive" alerts from antivirus software or "Unknown Publisher" warnings from web browsers (like SmartScreen) during download. Thanks to this new accreditation, Split3r is now recognized as safe software from a verified publisher. You should no longer encounter these blocking warnings when downloading or installing the application.
Security Reminder : Ensure you are installing the genuine, signed version of Split3r, please make sure to download the setup exclusively from our official page: https://www.split3r.com/download/...
