Download NiemanSculpt 2.2.3


Download for Windows                       Download for Mac

Free for noncommercial use. Must attribute NiemanSculpt in any public posts or displays that feature models designed in part or in whole with the NiemanSculpt sculpture generator. For commercial use, click here.



Get NiemanSculpt Pro

Purchase a license securely at Gumroad



Version 2.2.3

Released September 16th, 2023

  • Added ability to remove all interior structural parts during generation

  • Fixed a bug that was preventing the “1 x 1 Plates Only” preset from functioning correctly

  • Fixed critical bugs related to connectivity optimization


Version 2.2.2

Released September 14th, 2023

  • Improved color fidelity when using parts availability checks on colorless models with a user-specified generation color

  • Improved color availability handling when using brick-height interval generation

  • Added a lower-period random sinusoidal generation option to the experimental terrain sculptor

  • Optimized runtime performance of connectivity optimization

  • Fixed a critical bug affecting connectivity optimization of some models

  • Fixed bugs related to part selection in mosaic generation


Version 2.2.1

Released September 12th, 2023

Changes to advanced features available with a NiemanSculpt Pro license key:

  • Experimental new terrain sculpting feature

    • Sculpt custom topography with a built-in editor

    • Generate models with dozens of landscape presets featuring different colors, textures, parts palettes, SNOT generation, and randomized plants

    • Automatic parts availability checking and price optimization

    • Advanced support structure optimization

    • Automatic black border generation

    • More features and presets to come

  • Expanded brick-height-interval generation to include standard slopes and wedge bricks

  • Added option to use units in .obj or .stl files for model scaling

  • LDraw Find & Replace is now accessible by pressing F from the main menu in NiemanSculpt Pro

  • UI improvements

Additional improvements for all users:

  • Fixed a bug affecting the placement of parts 4445 and 4161

  • Fixed a bug related to automatic user preference saving


Version 2.1.2

Released September 6th, 2023

Changes to advanced features available with a NiemanSculpt Pro license key:

  • Added option to generate sculptures using only bricks placed at brick-height intervals

  • Improved connectivity optimization

Additional improvements for all users:

  • Adjusted model rotation angle handling to follow right hand rule conventions with LDraw/Studio axes

  • Fixed a bug that was forcing hollowing of some models

  • Fixed bugs related to automatic user preference saving

  • Fixed bugs related to OBJ file parsing

  • Fixed UI bugs


Version 2.1.1

Released August 13th, 2023

Advanced features now available with a NiemanSculpt Pro license key:

  • Part availability checks and price optimization
  • Connectivity analysis and optimization
  • Advanced control over internal support structure
  • Automatic removal of structurally unnecessary parts
  • Optimized part sequencing for creating instructions
  • Tiled surface generation

Additional improvements for all users:

  • Improved slope and curved slope placement algorithms for smoother results
  • User interface upgrades
  • Bug fixes related to error handling and OBJ file parsing



Version 2.0.0

Released June 1st, 2023

  • Sculpture generation is now roughly 20x faster


  • Full control over 3D model rotation

  • Hollow interior now available in SNOT generation

  • Improved neutral color functionality and optimized color processing

  • Improved fidelity in mosaic generation

  • Model scaling is now based on horizontal dimensions only, not height

  • Many minor bug fixes, compatibility improvements, and user experience tweaks


Version 1.0.15

Released January 15th, 2023

  • Significantly reduced parsing time for multi-object .obj files
  • Changed default color to blue
  • Added elapsed time information to post-generation page
  • Backend restructuring in preparation for future performance improvements


Version 1.0.14

Released November 2nd, 2022

  • Optimized color selection algorithm
  • Improved handling for anomalous .obj file formatting
  • Fixed bug regarding up direction settings in binary-encoded .stl files
  • Fixed bugs related to user preference saving


Version 1.0.13

Released September 12th, 2022

  • Fixed critical bug regarding .obj files exported from Fusion 360


Version 1.0.12

Released August 31st, 2022

  • Removed Find and Replace functionality for Studio files (please use Studio’s new built-in replacement function)
  • Backend improvements


Version 1.0.11

Released July 31st, 2022

  • Added color 370 Medium Brown
  • Added color 371 Medium Tan
  • Fixed color nomenclature and numbering issues


Version 1.0.10

Released May 31st, 2022

  • Added wedge plates 47407 and 2419


Version 1.0.9

Released April 15th, 2022

  • Added wedge plates 51739, 48183, 43719, 65426, and 65429


Version 1.0.8

Released April 2nd, 2022

  • Fixed critical generation bug from version 1.0.7


Version 1.0.7

Released April 2nd, 2022

  • Rewrote data structure to significantly reduce RAM usage
  • Improved coloring algorithms in sculpture generation to produce cleaner results from image textures
  • Fixed critical bug related to upside-down direction sculpture generation
  • Fixed bug related to placement of part 41682


Version 1.0.6

Released March 26th, 2022

  • Tweaked sculpture generation algorithms to improve handling of simple geometric shapes
  • Improved accuracy of model sizing


Version 1.0.5

Released March 24th, 2022

  • Improved handling of greyscale images in mosaic generation
  • Fixed critical bug related to .stl file parsing


Version 1.0.4

Released March 24th, 2022

  • Improved generation algorithm for curved slopes
  • Improved generation algorithm for cheese slopes
  • Improved progress window text for SNOT elements
  • Fixed bug related to generation of part 41682 in upside-down direction
  • Fixed bug related to generation of part 11477
  • Fixed bug related to saving of mosaic size preference


Version 1.0.3

Released March 22nd, 2022

  • Improved sculpture generation algorithms to make transitions between stud directions smoother in SNOT mode


Version 1.0.2

Released March 20th, 2022

  • Added SNOT bracket generation with part 41682
  • Improved accuracy of sculpture sizing
  • Fixed bug related to model scaling
  • Increased maximum supported coordinate values for 3D model files
  • Improved clarity of GUI text


Version 1.0.1

Released March 13th, 2022

  • Added color 368 Vibrant Yellow
  • Separated color preferences for sculpture and mosaic generation
  • Added parts selection option for mosaic generation
  • Decreased output file sizes
  • Improved compliance with LDraw file standards
  • Fixed bug related to scrolled text boxes
  • Fixed bug related to Find and Replace file handling


Version 1.0.0

Released March 8th, 2022

  • Automated sculpture generation
    • Studs-up mode
      • Optional support grid generation at variable
      • Optional hollowing with variable wall thickness
    • SNOT (studs not on top) mode
      • Automatic tile placement to avoid collisions
      • Automatic internal placement of SNOT elements
    • 160 shapes of LEGO elements used in generation
      • Wedge plates, slopes, wedge bricks, curved slopes, and more
    • 3D models in .obj or .stl format supported
      • Automatic detection and application of image textures and material colors for .obj files
      • Supports multi-object scenes for .obj files
      • Option to select an image to apply to UV-mapped .obj models
    • Built-in generation presets
    • Full control over individual parts and colors used in generation
  • Wall-style mosaic generation
    • Specify mosaic size by width 
    • Full control over individual colors used in generation
  • Find and Replace
    • Find and replace mold variants in Studio (.io) models
    • Outputs results to .ldr file
  • Easy-to-use user interface
    • Automatically saves and defaults to last used generation settings

Installation Guide


After opening the file downloaded from the above link, simply follow the instructions on screen to install NiemanSculpt. Once installation is complete, use the newly-created desktop shortcut to run NiemanSculpt.

If an unidentified developer warning blocks you from opening the NiemanSculpt installer, click “More info,” then select “Run anyway.”

If an error citing “ucrtbase.dll” occurs when opening the installer, simply try running the installer again, and the error will likely go away.


After opening the file downloaded from the above link, simply follow the instructions on screen to install NiemanSculpt. Once installation is complete, search for “NiemanSculpt” in Spotlight search to run the program.

If an unidentified developer warning blocks you from opening the NiemanSculpt installer, open your Downloads folder in Finder, control-click on the installer program, and click Open. You will then have the option to open the program despite the warning.