Assignment 2 – The obelisk

Worth: 15%

Due: Digital files to be submitted at the end of week 7’s class (13th April 2011). Printed models due at the start of week 9′s class after the mid semester break (4th May 2011)


The objective of Project 2 is to introduce students to ADDITIVE 3D numeric fabrication processes, focusing on the technique of printing with a 3D PRINTER machine. Each student will a design a small object to be 3d printed at two different scales 1: at architectural model scale of 1:50, and 2: at wearable, jewelry scale. Students are to use the same design to produce the two different scaled models (some minor adjustments may be needed as appropriate). We will be using the free, open source software Blender ( to create our digital models. We will use Magics (installed on RMIT lab machines) to fix and prepare STL files for 3d printing.  The specific requirements for each model are outlined below:

Model 1, architectural scale 1:50

  • Design a small Obelisk / Column / Tower / Campanile.
  • It should be a max size of 10m  high, so at 1:50 architectural model scale this is a max model size of 150 mm high, probably around 50mm sq for the base..
  • This model is to be printed on the ZCorp powder printer at RMIT. (ZCorp bed size : 350x250x200H) + 5mm edge.  You can also print this model from Shapeways, but use the “Sandstone” or “White Strong Flexible” Materials.  No metals.

Model 2, wearable/jewelry scale

  • adjust the design as necessary in order to produce a small scale, wearable/jewelry scale model. (e.g. you may need to add fasteners or chain loops to create a pendant piece)
  • The idea is that the objects will be different, but created from the same geometry.  This means that they will look different, be of different size & material, but you should be able to read the relationship between the two.
  • max model size (as a guide): 50x50x50mm. there is no minimum – however you will be limited by the machine and material restrictions.
  • Models to be printed either on RMIT’s OBJ printer, or through a third party (e.g. Shapeways) in acrylic, plastic, resin, or stainless steel as appropriate.

Submission 1: end of week 7’s class (13th April 2011).

  • Digital STL files finished.  Submit via email or on disc in class.
  • Screenshot in Magics showing no errors in the file

Submission 2: start of week 9′s class (4th May 2011)

  • the two printed models
  • two renders/photo-montages of your design

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