Type "Everest" into any terrain generator and the instinct is to frame the whole Khumbu — Everest, Lhotse, Nuptse, the glaciers, the trekking route. Press print and what comes out is a slightly wrinkled biscuit.
The mountain is not missing. The scale is.
Everest rises 8,848.86 m above sea level, the figure Nepal and China finally agreed on together in December 2020. But nothing on a printed map measures from sea level. What you see is the gap between the highest point in your frame and the lowest, squeezed into whatever width you chose.
The same summit, three ways
All measured in the map maker at 150 mm wide, at one-to-one height:
| Box around the summit | Heights in it | Range | Model stands |
|---|---|---|---|
| 4 km | 6,431 – 8,735 m | 2,304 m | 90.4 mm |
| 8 km | 5,492 – 8,730 m | 3,238 m | 64.8 mm |
| 20 km | 4,433 – 8,721 m | 4,288 m | 36.2 mm |
Read that twice, because it is the whole article. The 20 km box holds almost twice the vertical range of the 4 km box — 4,288 m against 2,304 m — and prints at less than half the height. Widening the frame adds relief in metres and destroys it in millimetres, because the scale shrinks faster than the range grows.
Everest at 20 km across is a range of hills. At 4 km across it is a spike you could hurt yourself on.
It needs no exaggeration at all
Most terrain needs stretching. Everest is one of the few places where stretching is actively wrong:
Sixty millimetres of mountain on a 150 mm plate at 1×, before you touch a setting. Push it to 2× and you get a 130 mm spike that no longer resembles Everest and tells anyone who knows the mountain that you never looked at a photograph. Leave it at 1×, or let the automatic setting find it — it lands on 1× here, which is the tool agreeing with you.
What the elevation data actually knows
Worth being straight about, because it looks like a bug otherwise. The model's summit reads about 8,730 m, roughly 115 m under the surveyed figure, consistently at every box size.
Two reasons, both honest. Elevation is sampled on a grid — very roughly 10–30 m between samples — and a summit is a point, so the highest sample sits a little down the side. On top of that, radar elevation data has known gaps in high mountains where steep snow returns poor signal, and those gaps are filled from coarser sources. High Himalayan summits are exactly where that bites.
So the shape is right, the ridges are right, and the peak is a hair low. For a printed object it changes nothing — but if you label it 8,848 m, know you are labelling from the survey, not from the mesh.
Contour lines suit it
A plain terrain print is a shape. Contour lines make it a map, and give a grey or white print something to catch the light on — the difference between a model that photographs well and one that looks like a lump.
For the 8 km box the automatic interval comes out at 200 m, which is right: about sixteen lines from valley floor to summit. Finer than 100 m and they touch on the steep ground; coarser than 250 m and the mountain loses definition. Keep them at least 0.8 mm wide on FDM, which is two perimeters at a 0.4 mm nozzle.
Four boxes worth printing
All centred on 27.9881° N, 86.9250° E.
- The summit pyramid, 4 km. The most dramatic of the four and the one people pick up. Nothing but the summit, the South Col and the top of the Lhotse Face. Contours at 100 m.
- The classic, 8 km. Make this one first. Reads correctly from across a room. Contours at 200 m.
- The horseshoe, 10–12 km. Frame slightly south and you get the great cirque: Everest, Lhotse at 8,516 m barely a ridge away, and the long wall of Nuptse at 7,861 m closing the Western Cwm. This is the view from Kala Patthar, and the honest answer to "how close together are they?" that no photograph conveys. Rotate the frame along the Cwm rather than leaving it north-up.
- The trek, 25–30 km. Import a GPX of the Lukla to Base Camp walk and raise it. The mountain becomes backdrop, the walk becomes subject. It prints flat at this width, so use 2× or 3× and do not feel bad — the point is the line, not the peak.
Printing it
Everest is unusually easy to print for one reason: it is a heightfield. There are no overhangs anywhere, however vertical the Lhotse Face looks. If your slicer asks for supports, something is wrong.
| Layer height | 0.16 mm. Terrain is all slope, and slope is where layer lines show. |
| Perimeters / infill | 3 and 12%. The top surface is carried by the walls. |
| Supports | None. |
| Base / brim | 4 mm base, 5 mm brim at 150 mm and up. |
| Material | Matte PLA, not glossy. Matte grey or bone white photographs like a museum piece. |
Slow the top solid infill to 30–40 mm/s. On terrain almost the entire visible surface is top solid infill, so it is the one setting that changes how the finished thing looks. Print it flat, summit up, as it comes out of the software.
Colour
One colour, matte white or grey with contours catching the shadow, looks the most serious and prints in a single go. For two, put a colour change at the layer where the contour lines start — the 3MF export keeps them as their own part, so the slicer shows you which layer that is.
The trick that makes people look twice: set a colour change around 7,000 m and print everything above it in white. Not real glaciology, but it makes the height legible without a single label.
Making the files
- Open the map maker, already framed on the 8 km box.
- Under Layers, switch on Contour lines.
- Under Look → Contour lines, leave the interval automatic (it picks 200 m). Width 0.8 mm, height 0.6 mm.
- Under Print, width 150 mm, base 4 mm. Leave terrain height automatic.
- Under Export: 3MF for multi-colour, STL for single, or the per-colour STL zip.
Change the coordinates in that link and you have K2, Denali, the Matterhorn, or the hill you can see from your window.