Download Terrain as STL for 3D Printing

Turn USGS 3DEP lidar elevation data for any place in Wisconsin into a watertight STL with a solid base, ready for PrusaSlicer, Cura or Bambu Studio. Print Devils Lake and the Baraboo Hills, a stretch of the Driftless Area or your own property.

What is STL?

STL is the standard file format for 3D printing. It describes a solid object as a closed shell of triangles, and every slicer reads it.

A terrain STL is the landscape turned into that kind of shell: the ground surface on top, walls around the edges and a flat base underneath, so the printer sees one solid piece.

Why 3D print terrain?

• See the landscape: a model in your hand shows ridges, valleys and benches better than any map.
• Teach with it: moraines, river valleys and watersheds make sense when students can touch them.
• Remember a trip: a model of a summit you climbed or a trail you ran makes a lasting keepsake.
• Show a property: a model of a lot or farm helps clients, family and builders understand the ground.
• Make it accessible: tactile models let people who are blind or have low vision explore a landscape.

What you get in the file

• Watertight solid: the terrain surface, vertical side walls and a flat base, with every edge shared by two triangles, so slicers accept it without repair.
• A built-in base: a plinth below the lowest point, so even flat ground prints as a solid body.
• Unitless model: the longest side is 1 unit across and the other side keeps its true proportion. You choose the print size in the slicer.
• Your vertical scale: 3× exaggeration (the default) or 1× true scale.
• Binary STL: compact, and read by every slicer. The mesh is thinned for large areas to keep the file manageable.

Printers and software that use STL

Printers

• FDM (filament): Prusa, Bambu Lab, Creality and most desktop printers. The easiest way to print terrain.
• Resin (SLA/MSLA): finer detail for small, sharp models.

Slicers

• PrusaSlicer: free; works with Prusa and many other printers.
• UltiMaker Cura: free and widely used.
• Bambu Studio and OrcaSlicer: free slicers for Bambu Lab and other printers.

3D modeling

• Blender: add text, cut the model into tiles or combine it with other parts.
• Meshmixer and MeshLab: inspect and edit meshes.
• Tinkercad: a simple browser tool for adding labels or a frame.

How to download terrain as STL

1. Open the map: go to Download Data and search for a peak, town or address.
2. Select the area: draw a rectangle, or click a parcel to select the rectangle around it. The area can be up to 7.5 miles per side.
3. Choose the vertical scale:
   • 3×: print-friendly; makes gentle terrain readable.
   • 1×: true scale; best for big mountains and for models that must be measured.
4. Choose STL among the 3D and terrain formats.
5. Download: the area is free to explore on the map; the file needs a pass.
6. Slice: open the STL in your slicer, scale it to the size you want, and print.

Common uses

Teaching models

Classrooms print a moraine, a Driftless Area valley or a local watershed to teach landforms, erosion and how contour lines work.

Hiking and climbing keepsakes

A model of Rib Mountain, a favorite trail or a summit you reached makes a gift that means something. Paint it or mark the route afterwards.

Property and land

Builders, architects and landowners print a lot or a farm to see drainage, slope and building sites at a glance. See also: Property contour map for a Wisconsin parcel.

Science and research

Physical models help explain landslides, river terraces and fault scarps to students, stakeholders and the public.

Art and decoration

Terrain prints make striking wall pieces and desk objects, especially in a single color under side light.

Accessibility

Tactile terrain models give people who are blind or have low vision a way to explore landscapes by touch.

Tips for printing terrain

Vertical exaggeration

Most real landscapes look flat when printed small. 3× fixes that for valleys, plateaus and foothills; use 1× where the relief is already large.

The base is included

The STL already has a flat plinth, so it sits square on the bed. You can thicken it in your slicer or in Blender if you want a heavier piece.

Know your printer

Fine detail is limited by the nozzle and layer height. A 0.4 mm nozzle with 0.1–0.15 mm layers shows terrain well; very small models lose fine ridges.

Scale with intent

Decide the print size first, then the area. A small area printed large shows every gully; a big area printed small shows the overall shape. Output resolution scales with the size of the area you select. Exports are capped at 1,024 pixels on the longest side, with a floor of 3.3 ft per pixel — so a 900 ft building site is delivered at the full lidar detail, while a block 7.5 miles on a side is resampled to roughly 39 ft per pixel. Select a smaller area when you need fine detail.

Print settings

Print terrain face up with no supports. 10–15% infill is plenty; more walls give a cleaner edge.

Finishing

Light sanding, a primer and a wash of darker paint brings out relief. Hand-paint lakes, rivers or a route for a finished look.

How the elevation becomes a model

The download reads the bare-earth elevation grid for your area and turns each grid point into a vertex at its height. The lowest point in the area becomes the top of the base, and heights above it are scaled to the same units as the width, multiplied by your vertical scale. Triangles join the vertices into the surface, side walls drop to the base, and a flat bottom closes the solid.

The model shows the ground without buildings or trees, because it comes from a bare-earth model. Where an area has no data, the surface is set to the lowest point so it prints flat.

STL or OBJ?

Both describe the same terrain. The STL is a closed solid with walls and a base, which is what slicers need. The OBJ is the surface alone, for rendering in Blender or game engines. Choose STL for the printer, OBJ for the screen.

About the data

Ground elevations come from the USGS 3D Elevation Program (3DEP) seamless bare-earth model, with elevations above NAVD 88. Source cells are 3.3 ft per pixel in the finest work units, with about 9.8 ft per pixel and 33 ft per pixel sources elsewhere. USGS elevation data is public domain. Lidar coverage and source dates vary across Wisconsin. Check your site against the USGS 3DEP work-unit index; an unavailable lookup means coverage is unknown. See lidar coverage in Wisconsin for the project behind your area. More from the USGS 3D Elevation Program and Wisconsin elevation resources.

Accuracy depends on the source project, its date and how well ground was measured; this site does not assign one accuracy figure to all Wisconsin. Source cells range from 3.3 ft per pixel in the finest work units to about 9.8 ft per pixel or 33 ft per pixel in coarser sources. Every download reports the share outside the finest lidar work units, or says coverage is unknown if the index cannot be reached. Bare-earth elevations exclude buildings and tree canopy and do not replace a surveyed elevation for legal or engineering decisions.

Frequently asked questions

Related guides

• 3D print a terrain model of Wisconsin – from area to finished print
• Terrain as OBJ – for Blender and 3D rendering
• Contours as SVG – for laser-cut layered models
• Download DEM data – the elevation model as a GeoTIFF
• Contour lines for Wisconsin – overview of every format