If you want to print your object or building with a 3D printer, you will need an .STL file (stereolithography).
ARCHICAD:
01. Open your project with Archicad.
02. Determine the size of your model with Measure Between Two References: lengh, width and height. Here we have 5072x2179x1471mm.
03. We will need to re-scale our .stl file to make it printable respecting 3D printer specifications. Example: the maximum build size of our 3D printer is 203x203x152mm.
04. Let’s do some mathematics: Our car is 5072mm lengh and the max building size of our printer is 203mm. I will add a margin: 190mm max…
5072mm/190mm = 26.69473684
05. File >> Save as…
06. Choose save as Stereo Lithography File (.stl)
07. Now you have choice between 3 options:
- Binary or ASCII STL File output
- Scale
- Specify transparency threshold for export
08. Type your desired transforming scale (1 : 26.69473684) then save.
09. Your .stl file is now ready !!
REVIT:
01. Visit Autodesk plugin extensions website: apps.autodesk.com
02. Download and install the lastest STL Exporter for Revit (you’ll need to sign into your Autodesk account).
03. Open your family or project on Revit.
04. Determine the size of your model with Measure Between Two References: lengh, width and height. I downloaded a car from the excellent website revitcity.com.
Here we have 467x203x141cm
05. Add-Ins >> STL Exporter for Revit
06. You have choice between 3 options:
- Binary or ASCII STL File output
- Inclusion of linked models
- Specifically including or excluding of element categories
07. Save and close Revit.
08. You can notice that we exported with a 1:1 scale. Infortunatley, Revit can not export with a custom scale. So we will need to re-scale our .stl file to make it printable respecting 3D printer specifications. Example: the maximum build size of our 3D printer is 203x203x152mm.
09. Let’s do some mathematics: Our car is 4670mm lengh and the max building size of our printer is 203mm. I will add a margin so let’s say 190mm max…
190mm / 4670mm = 0.040685225
10. We need to re-size our model: I downloaded and installed the free MeshLab app: meshlab.sourceforge.net
11. Open your model with MeshLab app
12. Filters >> Normals, Curvatures and Orientation >> Transform: Scale
13. Type your desired transforming scale (here x+y+z = 0.040685225) then apply and save your model.
14. Your .stl file is now ready !!
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