How to 3D print your Minecraft builds – step by step, with tips on scale and slicer
A castle, a village or your survival base as a real model on your desk: with a 3D printer it only takes a few steps. This guide takes you from the build to the finished print – and explains what matters for scale and slicer settings.
1. Save the build as a file
Save your build with Litematica, WorldEdit or a structure block. The guide How to export a schematic from Minecraft shows how.
2. Convert it into a print file
- Upload the file to the converter. You immediately see every block type with its count.
- Choose blocks: decoration such as torches, flowers, glass panes and water is unticked by default – these parts would be too thin to print. If you only want the walls, untick leaves as well.
- Turn on detail mode if your build has stairs and slabs. Roofs then become real slopes instead of cubes.
- Keep connect diagonal blocks on: blocks that touch only at an edge would break off otherwise.
- Choose the format: STL works in every slicer, 3MF suits Bambu Studio, PrusaSlicer and OrcaSlicer.
The 3D preview shows the result before you download it. The model is already oriented correctly: up is up, north points to the back, and nothing is mirrored.
3. Choose the right scale
The scale decides how big one Minecraft block is in the print.
| Scale | Good for | Example: house of 30 × 25 × 20 blocks (W × D × H) |
|---|---|---|
| 1 mm per block | large builds, cities, landscapes | 30 × 25 × 20 mm |
| 2 mm per block | houses, castles, figures | 60 × 50 × 40 mm |
| 3–5 mm per block | small builds with lots of detail | 90–150 mm wide |
Rule of thumb: if your build is narrower than about 64 blocks, use 2 mm. At 1 mm, windows and fences are only one millimetre wide and easily close up with a standard 0.4 mm nozzle. Also check your print bed: most printers manage about 220–256 mm per side.
4. Set up your slicer
- Nozzle and layer height: 0.4 mm nozzle, 0.12–0.2 mm layers. Finer layers pay off at 1 mm per block.
- Walls and infill: 2–3 walls and 10–15 % infill are plenty.
- Supports: overhangs and floating parts (such as porch roofs) need supports. The converter warns you when parts do not touch the print bed. Tree supports are usually the easiest to remove.
- Adhesion: the “base plate” option in the converter adds a plate under the build. It keeps small footprints firmly on the bed.
- Material: PLA is the easiest. For a colourful village, paint the print afterwards.
5. Common problems
The slicer says “non-manifold” or reports errors in the model.
Keep “connect diagonal blocks” on. The mesh is then closed and clean, and the slicer has nothing to repair.
The inside of the house is full of supports.
Turn on “fill closed rooms”. Closed rooms are then printed solid – no supports needed inside.
The model is too big for my print bed.
Choose a smaller scale or leave parts out, for example the terrain under the build.
Windows and doors have closed up.
Use 2 mm per block or a smaller layer height.