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8/3/2019 RTC09 2.2.4 Revit and Digital Fabrication - Danelle Briscoe
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Revit + Digital Fabrication
Danelle Briscoe
Unitec New Zealand School of Architecture
SpeakerLogo
Digital vs Analog design background
Types of Digital Fabrication tools/techniques
Case study Architectural project Tropical House
Exporting from Revit 2008/2009 for 3D Printing
Examples of 3D Printing
Revit + Digital Fabrication
Outline
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Methodologies for using both
Revit + Digital Fabrication
Digital vs Analogue
Computer-Aided Design to Computer-Aided Manufacturing
BIM model goes straight to
manufacturer
Revit + Digital Fabrication
CAD/CAM
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Computer Numerical Control
Subtractive fabrication
Revit + Digital Fabrication
CNC Milling
Additive Rapid-Prototyping
Stereo-lithography
Revit + Digital Fabrication
3D Printing
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Additive Rapid Proto-typing
Powder sintering
Revit + Digital Fabrication
3D Printing
Additive Rapid Proto-typing
Fused Deposition
Revit + Digital Fabrication
3D Printing
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Additive Rapid Proto-typing
Fused Deposition
-model shows how a 3D
Print can emphasize
different aspects of design
by turning off components
like windows.
Revit + Digital Fabrication
3D Printing
Additive full scale concrete printing
Dr. Behrokh Khoshnevis
Contour Crafting
Revit + Digital Fabrication
3D Printing
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Registration of physical model/form to be imported into Revit
Revit + Digital Fabrication
3D scanner
2D cut profiles
from digital files
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Revit + Digital Fabrication
Laser Cutter
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Subheading Font 16pt bold
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Revit + Digital Fabrication
Water Jet
Project in Barbados, West Indies
-utilizes Revit with
some digital fabrication
design techniques
Revit + Digital Fabrication
Tropical House
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Laser cut models
Allows you to cut
Multiple model bases
Quickly to test different
Schemes.
Revit + Digital Fabrication
Tropical House
Laser-cut site models
Show detail from 2D
Files that might typically
Get discarded or forgotten
Revit + Digital Fabrication
Tropical House
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Larger scaled site model
-Same 2D CAD files used
To cut another base model
at a different scale in order
To design more detail.
Revit + Digital Fabrication
Tropical House
Laser cut building model
Floor plan files exported to AutoCAD
To be set up for laser cutting and then
manual assemblage
Revit + Digital Fabrication
Tropical House
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3D Printing house design
BIM model is exported to AutoCAD
In order to 3D print with powder-sintering
And stereo-lithography
Revit + Digital Fabrication
Tropical House
3D Prints techniques: powder sinter vs. stereolithography
Opaque vs
translucent
Revit + Digital Fabrication
Tropical House
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3D print using Stereolithography
Showing signs of sun damage
And warpage after 1 year.
Columns printed at 1mm
Thickness are bending.
Scratches were made to the
model itself from fabricators
Clean-up technique
Revit + Digital Fabrication
Tropical House
Pre-cast Hollow core panel
Intended to be a Full-scale print of house
Revit + Digital Fabrication
Tropical House
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To transfer Revit files to STL:
1. Export your file under DWG
Revit + Digital Fabrication
3D Printing
2. Revit will prompt you to
default window where you
can save file as an as an ASCII file.
Revit + Digital Fabrication
3D Printing Revit 2008
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3. That exported ASCII file can
then be inserted and manipulated
(i.e. scaled down) in AutoCAD
Revit + Digital Fabrication
3D Printing Revit 2008
4. Once you have manipulated
your model for 1:1 printing
(i.e. checking scale and minimum
dimensions of pieces), you can
EXPORT the file as an STL file
by changing the Files of typetab to Lithography (*.stl).
Revit + Digital Fabrication
3D Printing Revit 2008
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Install + Exporting from Revit
Run STLExporterForRevit2009.exe
Follow instructions in the installation dialog box
You will be prompted to select which Revit verticals to install the Add-in for. Selectthe check box for each version that you want the add-in to run in and select Next.
Continue following the installation instructions.
The STL Exporter Add-in will be installed for Revit 2009 products
Revit + Digital Fabrication
3D Printing Revit 2009
Preparing the Model for Export:
Open a Revit project
Open a 3D view of the model
The STL Exporter is designed to print everything that is visible in the 3D view. Sothe most important thing to do before exporting the model is to simplify the model
so only the important things that interest you are printed. Start by hiding all theelements that you do not want to print:
Set view detail level based on the quality of the print that you want. Normally thatwould probably be Coarse or Medium. (found at the bottom of the view window)
Revit + Digital Fabrication
3D Printing Revit 2009
*NOTE: There is currently a known issue with thesetting detail level that may render it ineffectivefor some elements.
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Preparing the Model for Export (cont.):
Use the Visibility/Graphics dialog under the View menu to excluded categories ofelements in the STL file. Hide items like furniture/fixtures be hidden beforeexporting.
Use Hide in the view for any components that you want excluded in the STL file .
In cases where stairs, railing, banisters, windows, doors, columns, beams, walls,floors and roofs are too thin or small for the scale that you are printing at, you willwant to either hide the elements or replace them with thicker elements so they willprint properly.
Revit + Digital Fabrication
3D Printing Revit 2009
Exporting the Model:
Click Tools > External Tools > Export STL
Click Binary or ASCII format.
Click Save; pick a folder and file name
NOTE: There is no control on the accuracy of the approximation (e.g. angular andchordal deviation). The STL model accuracy is identical to that of the displayed.
Revit + Digital Fabrication
3D Printing Revit 2009
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Preparing the Model for 3D Printing:
A number of things may need to be done after the STL file has been created toinsure a high quality 3D print.
Use an STL viewer to check for any errors in the model and try to resolve anyerrors.
Shrink-wrap the model if you are interested in just the exterior and then coreout/hollow out the interior to reduce the amount of material required to print themodel.
Remove any elements that you do not want to print
Thicken or remove any objects that are too thin to print or have no thickness. Inmost cases that will be approximately 1-2mm at the printing scale. Theseelements may include: stairs, railing, banisters, windows, doors, columns, beams,walls, floors and roofs.
Revit + Digital Fabrication
3D Printing Revit 2009
Curving curtain wall
Sang Hee Park uses Sketchup file
to first model project and then imports
Into Revit for 3D print and documentation
Revit + Digital Fabrication
Beauty + the BIM
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Curving curtain wall
Sang Hee Park
-model detail
Revit + Digital Fabrication
Beauty + the BIM
Brick Module
Luciano Velocci
Revit + Digital Fabrication
Beauty + the BIM
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Blending Symbols
Boaz Du
Revit + Digital Fabrication
Beauty + the BIM
Blending Symbols
Boaz Du
Revit + Digital Fabrication
Beauty + the BIM
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Building as Land
Zayd Ali- uses toposurface
Feature to model conceptual
Proposal.
Revit + Digital Fabrication
Beauty + the BIM
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Hairy Architecture
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Revit + Digital Fabrication
Beauty + the BIM
Danelle Briscoe
Questions