Silo 2 - Nevercenter
Hi folks, Silo 2.5.1 is now available here on Steam. This update includes a significant new feature: Hard edges on smooth-shaded models.

The new feature allows you to set sharp shading edges on models that are otherwise smooth shaded (accessed by Display > Object Display > Crease Edges), so models can have a combination of smooth and sharp features while still remaining low-poly. (The command is doubled up with Subdivision Crease Edges, which was already implemented.) This edge creasing is supported by several export formats.

In the screenshot, the model on the far right is shown as a low poly object with smooth shading and Crease Edges applied to get the proper look. (Left: flat shading, middle: smooth shading without creases.) Video here:

The update also includes minor bug fixes. You can read about all updates at

Please let us know if you run into any issues.

Happy Modeling!
Sep 29, 2017
Silo 2 - Nevercenter
This is a minor update which replaces click-to-confirm error notifications with a small corner message.

When we previously posted this update, it contained a bug which caused a crash on startup for some users. If you experience that same issue with this new build, please let us know right away.

Happy Modeling!
Sep 27, 2017
Silo 2 - Nevercenter
This is a minor update which fixes annoying error popups. They now appear as small messages in the corner which do not require a click. Apologies for the annoyance, and happy modeling!

Edit: due to a startup crash for some users, we've reverted this build for now. Please see the comments for how to help us track down this bug, if you're interested in helping.
Silo 2 - Nevercenter
Just a heads up, the 50% off launch sale celebrating our 2.5 release ends later today (in about 20 hours as of this posting). Happy modeling!
Aug 29, 2017
Silo 2 - Nevercenter
This is a minor update with the following changes:
- FBX loading speed improvements and bug fixes.
- Fixed blank white screen bug for some users.
- Enabled standard Windows 10 scaling for high-DPI monitors. (This scales appropriately to system settings but may appear blurry.)
- May also correct high-DPI scaling on Mac.
Silo 2 - Nevercenter
Silo 2.5 is here! This new version includes a ton of key improvements, including expanded file format support (Fbx and Collada/Dae), an all-new modern look and feel, and loads of usability improvements and bug fixes.

Here’s a list of what's new:
-Collada and FBX format support (import and export).
-Completely updated, modern, cleaner interface styling.
-Simplified Button Settings editor for easier custom setup design.
-Updated drawing code with in-app anti-aliasing setting.
-Added menu item to reveal custom primitives folder.
-Custom primitives folder can now include nested directories.
-Newly loaded files are now automatically framed in the viewport.
-New presets for color settings.
-Updated presets for mouse settings.
-Various other interface streamlining and improvements.
-Fixed bug some users experienced with selection when anti-aliasing was enabled.
-FACT file import/export bug fixes.
-STL file import/export bug fixes
-Fixed some tools reverting to the wrong manipulator
-Fixed some manipulators allowing incorrect selections
-Many error messages moved to pop-ups to make it more apparent when something goes wrong.
-Images always saved with correct extension even when missing from file name entered.
-Improved many error messages for clarity.
-Moved to 64-bit-only on Windows, greatly reducing crashes.
-Added menu item to reveal preferences folder.
-Object properties window now always shows shape properties (in addition to component properties).
-Texture seam display is now per-object.
-Texture seams can now be marked using highlighted edges.
-Cleaned up internal code.
-New app icon.
-Lots of other minor fixes.

Platform notes:
We've had to discontinue 32-bit Windows support in order to continue development. Likewise, Linux is no longer in active development, but 2.3 should still be available for both. If for any reason you wish to revert to Silo 2.3, there is a beta branch available called "silo_2.3" which should contain everything as it was before the update. Our apologies to those affected.

Thanks, and happy modeling!
Silo 2 - Nevercenter
We're excited to announce that Silo 2.3.1 is ready!

New/Changed Features in v2.3.1
  • Data directories have changed (for a better launch experience for users coming from Silo 2.2 and earlier).
  • Windows versions are now large-address-aware, this is particularly helpful for 32-bit users when running on a 64-bit windows. Silo can now use 4 GB of RAM instead of just 2 GB.
  • Windows 64-bit native version. The 64-bit version can handle larger meshes due to availability of more than 4 GB of RAM, the same as the Mac OS X and Linux versions which are already 64-bit native starting in Silo 2.3.
  • The black-window issue on Linux has been fixed, which was caused by European numeric locales. Silo now forces a US/UTF-8 locale on launch. Some distros may still setup the locale incorrectly, so if you use a non-US locale and run into issues, please let us know at what distribution / locale you are using.
  • A cut tool crash has been fixed.
  • Alt/option key handling on OS X has been fixed. This fix was made available early in version 2.3.02 for Mac OS X as well.
  • It is now possible to delete empty objects in the scene editor.
  • Exported OBJs should play much better with Substance Painter.
  • Context menu placement on OS X with multi-monitor setups should be fixed.
  • Mac-only: Qt libraries updated to v5.4 for compatibility with Yosemite Gatekeeper requirements.

Complete release notes available at
Dec 19, 2012
Silo 2 - Valve
Silo 2 is Now Available on Steam and is 20% off for a limited time!

Silo 2 is a focused 3D modeling application with the ability to effortlessly switch between organically sculpting high-polygon models and precisely controlling hard-edged surfaces. It can be used for anything from creating 3D characters for video games and movies to quickly exploring 3D architectural ideas.


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