- Terrain2STL
First on our list of top free 3D terrain models is ‘Terrain2STL’. This is an online application that converts digital topographical data into a 3D printable STL file. The application enables users to select an area on Earth and generate a 3D model of the terrain.
Creating your model with Terrain2STL is straightforward. You begin by moving the red box to the desired location on the map to serve as your model’s boundary. Next, generate the 3D model with the ‘Create STL’ button. If unsure about your desired model dimensions, there’s an option to preview the model.
The beauty of Terrain2STL is that it uses data from the Shuttle Radar Topography Mission (SRTM), which recorded a high-resolution digital elevation of the world. This ensures that your model will be as close as possible to the actual terrain.
- Thingiverse
With millions of user-generated 3D models, Thingiverse maintains a commendable repository of 3D terrain models. This platform allows users to download the models free of charge and contains an ample amount of 3D printable terrains.
Thingiverse encompasses various landscapes, having terrains that reproduce recognized landmarks like the Grand Canyon, Mount Everest, and the Swiss Alps. Additionally, it includes fantasy terrain designs for use in tabletop RPG games or similar activities.
The platform is user-friendly and allows users to share their models, making it a collaborative community of 3D enthusiasts. It implements detail in its terrain models, proving its utility to professionals and hobbyists alike.
- Terrain.party
Next up is Terrain.party, a website built specifically for exporting terrain height maps. The primary audience of this tool is game developers or designers who need to import terrain data into their game or 3D modeling software.
Terrain.party gives options of where to source data from, with alternatives such as “USGS,” “Elevation API,” “Viewfinder,” etc. Each offers varying levels of detail, with USGS recommended for U.S locations due to its superior accuracy.
One downside to Terrain.party is that the raw terrain data is exported as a PNG image, which means you would need additional software to convert the height map into a 3D model.
- Cura
Cura doesn’t solely serve as a platform for finding 3D terrain models but is majorly used for slicing 3D prints. Despite this, one of its less-advertised features is the ability to generate 3D models from a height map directly, effectively turning it into a 3D terrain model generator.
This 3D slicer software accepts an image and caters it into a 3D model based on the image’s luminosity (darker areas appear lower while lighter areas are higher). It’s a simple yet effective way of getting a 3D printable model from a height map or image, thus making it perfect for terrain modeling.
- 3D Elevation Program (3DEP)
3DEP is a program launched by the United States Geological Survey (USGS) with the main aim of collecting enhanced elevation data in the form of high-quality LiDAR data over the conterminous United States, Hawaii, and the U.S. territories.
Providing a range of data resolutions, 3DEP caters to the needs of both professional and hobbyist audiences. The only downside is the formatting. Outputted data is in a .las or .laz format, so it needs conversion to become a 3D printable model.
- TouchTerrain
Last but not least on our list is TouchTerrain. This web application, developed by Iowa State University, lets you select an area on a map and generate a 3D printable terrain model.
TouchTerrain provides different options for model complexity and size before exporting your model as a .STL or .OBJ file, making it instantly ready for 3D printing. It also supports exporting multiple tiles of terrain, making it ideal for generating larger terrain models.
For high-quality, detailed 3D terrain models free of charge, these platforms offer a range of solutions depending on your needs. Whether you want to create a realistic model of Everest, a fantasy RPG landscape, or anything in between, these resources give you the tools you need. Remember; in any 3D printing project, attention to detail, patience, and creativity are your best allies. Happy modeling!
