index

Principles Practices project management

Computer-aided design

Computer-controlled cutting

electronics production

3D scanning and printing

electronics design

molding and casting

programming

Computer-controlled machining

input devices

composites

interface and application programming

output devices

networking and communications

mechanical design, machine design

applications and implications

invention, intellectual property, and income

project development

final project presentations

3D scanning and printing

First I intended to construct a base to scan objects with 123dcatch. But It did not work in four tests that i did. With Neil´s suggestion that the 123d Catch need more object´s information to function, I chose one lizard with lots of colors informations to see what´s going on and it worked perfectly. If you want to see only the final result go to the fifth test.

I used a table of 49cmx49cm and did one circle that I divided in 48 parts to position the camera to take pictures around the object. The object was 5cm higher from the table to appear in the camera screen. The camera (Cybershot 14.1) was fixed and elevated 15cm higher through a support. The first object to be scanned was a white 7cmx5cm replica of Rem Koolhaas "Casa da Música".

First Test: The object was fixed in the center of the table and the camera moved around manually. 123dCatch response: The object didn´t appear, but what was around was catched well. I supposed the problem was the artificial light.

Second test: I went outside to get natural diffuse light (white light) and for this test I fixed the camera and move the table with the object in the center. 123dCatch response: Only a little part of the object was scanned and again the surround was well catched. Third test: I tried to put more intense artificial light in the same object. 123dCatch response: An error called: "The application was unable to create your capture because not enough of your images could be stitched together."

Fourth test: I change the object supposing that the problem was its white color, so I choose one 7cm Bronze´s Buddhist bell supposing that the irregular shapes and the color would be better captured by the software. 123dCatch response: The worst shape was made.

Following the Neil suggestions about the object and using a "guide" as suggested in this video. Link This video shows one straight piece of wood in front of the scanned budda, so i put one black pen cap and used on colored carpet to help to scan the lizard. The result was in one shot! So the file I process with Netfabb  to correct meshes and Rhino 05 to draw a base and export to .stl. Here the Rhino link

So I printed in a Makerbot.