How to ensure deadline and quality with professional 3D print service directly from our headquarters
The physical meeting still wins over the screen. In an industry filled with digital renderings, the physical model stands out as the ultimate sales tool for architects and developers. When a deadline approaches and a competition must be won, a professional “white model” gives judges and investors something concrete to gather around.
At 3D actions, we function as your technical production engine. We translate complex BIM files into physical models, ensuring the precision of your design without spending hundreds of internal hours on manual cutting work.
Why does a physical model sell the vision better than a rendering?
A rendering is often too perfect. It hides reality behind flattering lighting and filters. A physical model, on the other hand, shows the project’s honesty. Louis Becker from Henning Larsen Architects points out that the imperfect and the places where there are cracks for life are often where the value arises.
When you present a physical model, you force the viewer to engage with the human scale – what Jan Gehl calls the “human scale.” You demonstrate how the building casts shadows throughout the day and how it relates to neighboring buildings in reality, not just in an isolated digital file. It provides a spatial understanding that laypeople, politicians, and investors understand intuitively.
A 3D printer creates this understanding quickly. Where manual labor takes weeks, the machine builds complex geometries such as detailed roofs and facades overnight. This frees up time for you to improve the design instead of gluing cardboard.
How do we translate your BIM files into 3D printable models?
The biggest challenge with 3D print in architecture is the file conversion. Programs like Revit and ArchiCAD draw buildings for contractors, not for a 3D printer. A drawing often contains piping, furniture, door handles, and complex internal walls that merely create noise and errors in the 3D print itself.
To achieve a flawless result, the process requires a so-called “solid” file. This means the model must be one continuous, watertight shell. We remove all interior elements that are not visible from the outside. We delete tags, layers, and groups with furniture as they do not contribute to the model’s external expression. We typically receive files in .STL, .STEP, or .OBJ formats. If you are in doubt about the export from your CAD program, you should send us a test file. We run a quick analysis to see if the shell is closed so the machine understands the geometry.
Which design details must be exaggerated to be visible?
When you scale a building 1:100 down to a table model, you run into the laws of physics. A gutter or a door handle becomes thinner than a human hair at this scale. A 3D printer, which typically places plastic in layers of 0.2 mm, will either ignore these details or print them as indistinct lumps.
To ensure a sharp model, you should follow some fixed rules of thumb in your 3D file. Ensure that no free-standing walls or columns are thinner than 0.5 mm in the final model size. It is often necessary to draw walls thicker in the print file than they are in reality to ensure structural integrity. An internal wall of 10 cm in reality becomes microscopic in the model and should be drawn as, for example, 20 cm in the file.
At the same time, you must exaggerate depths. Window frames and joints must be pulled deeper in or pushed further out than reality dictates. A depth of 0.75 mm provides a clear shadow effect and readable geometry, while a depth of 0.1 mm disappears completely in the print process.
Can you combine 3D print with traditional craftsmanship?
Many studios prefer a hybrid approach, and we fully support that. You do not need to print the entire terrain and base if you have skilled model builders internally. The value of a 3D printer lies in solving geometries that are almost impossible to build by hand.
A good example is projects like World of Volvo in Gothenburg. Here, the load-bearing wooden constructions constitute a complex, parametric system inspired by nature. Cutting these organic shapes in balsa wood is extremely time-consuming and imprecise. Here, we print the complex “tree trunks” and roof structures digitally, after which you mount them on your own hand-built base. It unites the handcrafted expression with digital precision and saves you from the most difficult hours in the workshop.
What precision and finish can you expect from a 3D print?
The choice of technology depends on the model’s purpose and size. For large volume models and building masses, we often use FDM technology. It is fast and cost-effective. Here, a 3D printer builds the model in layers of melted plastic. This results in a strong model, but with visible layer lines that are well-suited for “white models” or sketch models.
For smaller models with extreme detail – such as a section model of a facade or a winning model for a display case – we use SLA or Resin print. Here, a laser cures liquid resin. This provides a surface so smooth that it looks like molded plastic, and details down to hair thickness appear sharp. We often use water-soluble support material for complex overhangs. This means we remove the auxiliary structures by washing the model in water, leaving the surfaces clean and without ugly marks from tools.
What does an architecture model cost, and how is the price calculated?
The price of a 3D print is calculated based on machine time and material consumption, not based on the model’s complexity. This is where the big difference lies compared to manual model building. A complex facade with thousands of windows costs the same to print as a smooth wall if the amount of material is the same.
In manual model building, you primarily pay for expensive man-hours, and complexity increases the price significantly. With a 3D printer, you pay for machine time and material, and complexity does not affect the price. Furthermore, the price per unit drops drastically if you need several copies of the same model – for example, one for the client, one for the municipality, and one for the studio – as the file is already prepared and the setup only needs to be done once.
How do we ensure delivery before your competition deadline?
In a competition situation, time is the most critical resource. A 3D printer does not sleep. Our machine park at our facility runs around the clock, meaning we produce while you sleep. With local production, we eliminate the risk of customs processing and long shipping times from abroad. We ship by courier or offer pickup directly from our facility as soon as the part has finished processing.
FAQ: 3D print for architecture
Here you will find answers to the most common questions regarding the production of architecture models. We have gathered knowledge on everything from price calculation and delivery times to the technical requirements that ensure you get the best result for your presentation or competition.
What does it cost to 3D print an architecture model?
The price is based solely on machine time and material consumption, not on the model’s design complexity. This often makes it cheaper than manual labor, where expensive man-hours drive up the price. You can get a fixed price immediately by sending us your file, as we calculate the cost precisely from the model’s volume.
How fast can you deliver a 3D printed model?
We can often produce models from day to day, as our machine park runs around the clock. Delivery time naturally depends on the size of the model, but 3D print is significantly faster than manual building. We ship by courier or offer pickup so you can surely meet your important competition deadline.
Which file formats should I use for 3D print?
We prefer the file formats .STL, .STEP, or .OBJ, which can be exported directly from your CAD program. It is crucial that the file is saved as a “solid,” which means a closed and watertight shell without holes. We strongly recommend removing unnecessary interior elements and furniture from the file before sending it to us.
How do I ensure that small details are printed clearly?
You should exaggerate small details like window frames and joints to make them visible at a small scale. We recommend a minimum thickness of 0.5 mm for walls and a depth of 0.75 mm for facade details. If details are too small in the digital file, the printer will often ignore them or make them indistinct.
What is the difference between FDM and SLA for architecture?
FDM uses melted plastic filament and is ideal for large, robust volume models and classic “white models.” SLA, or resin print, uses laser-cured liquid and is best for smaller models with extreme detail. The choice depends on whether you prioritize size and low price (FDM) or an ultra-sharp surface finish (SLA).
Can I combine 3D print with hand-built models?
Yes, it is a very popular and effective solution to combine the two methods. We often print only the complex geometries, such as parametric roofs or organic shapes, that are difficult to cut by hand. You then mount the printed elements yourself on your own hand-built base for a unique, hybrid expression.
Make your next project tangible today
By using 3D print, you ensure that your vision stands sharp, physical, and convincing on the judging table. You save internal resources and minimize the risk of errors leading up to the deadline. We transform digital BIM data into physical form, advise on scaling and level of detail, and deliver quickly from local production.
Send us your file for a non-binding check, and let us help you win the project.
