Kalil Ventura

W_05: 3D scanning and printing (Feb 25)

The assignment for this week was to scan and print diferent objects in diferent methods and machines, the objective was to be familiar with these methods to be able to improve our abilities in this field and in the future design the actual components for our final projects.

SCANNING

I used diferent 3d programs to capture and edit the diferent files: Recap360, 123D Catch, Blender (to modify all the parts that where distorted).

Scan test nº1

1· The first attempt I made at scanning something was a person's bust(I asked one of my classmates so i could make the 3d file of her). I didin't have a very good result thow, because of the area I took the photos was full of background objects and most importantly the position of the frames I took weren't perfectly aligned with one another, that made the mesh result in a distorted face. Here are a couple of images captured off of the 3d enviorment it created in recap360:
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The camera i used to capture the photos was a Panasonic DMC-LX5.

Scan test nº2

2· The second attempt I made was with the 123d catch application that you can download for your phone. This attempt was simply to test out the software and see how it worked. I didn't really like the output of this test so I further continued with another ssytem of scanning. I scanned a child turtle figure you can see next:

This is a screen capture of the 3d mesh created after taking all the photos and processing them thrue 123d catch.
I used the 123d Catch on my iPhone 4 to make this scan.

Scan test nº3

3· The 3rd attempt at scanning I did was with the skanect software i downloaded from the internet for free and a kinnect camera made for Xbox360. The image it created was only of a bust of my body. The photographs we took where pretty good there where just some minor wholes in my nose, head and the under part of my chin. Here is a screen shot of the 3d model it created in the skanect program:

I later on tried edditing the mesh/model in different programs like rhino and blender but because it was an open surface model I was unable to close it and repair wholes to later on print it. Here is a capture of the model loaded in rhino: Bild

It wasn't possible to crop the bust inside the program that created the 3d image of myself because the model got miss placed inside the work area, it was no longer at the level of the work area but it was much lower. As i will show u in the next two images you will see what happened:
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Scan test nº4

4· The 4th and last attempt I made at scanning myself was with the same software and hardware as the last scan just this time we used a robotic arm to guide the path of the kinnect camera, so the photographs where more stable and done in an equal manner around the human figure(in this case me). The robotic arm we used is called KUKA and it works in six different axis, this machine is mostly used in factories with chain productionsthey substitute human actions for very precise movements. I took some photos while we did the scanning in this method, here they are:
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Here are some photos of what was happening on the computer while scanning with the kinnect software an the robotic arm:
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3D PRINTING

PRINT Nº1

The first attempt at printing was a piece of my bike that broke. The piece is a piece that holds the gear change to the bike. These pieces are normaly made with aluminium or other metallic components but I thought that it could be a good idea to replicate the piece exactly as the piece that broke on my bike, unfortunetley the file i made in reference to the actual piece was lost because of a computer failure that erased all my files on the windows side of my macbook pro. What I did instead is download the same component from thingiverse that someone had made previously. Here is a photo of the piece that broke and the 3d printed piece i got off thingiverse:

PRINT Nº2

The other piece I printed was the model I made of my self with the kinnect software and the robotic arm. The model that came out wasn't perfect because I moved my arms slightley when the scan was beeing made so I eddited it on blender in the sculpt mode. Here are some screenshots made while making the model:

As you can see in this last photo there is a substancial improvement on the model, the one on the left ist the modified model and the one on the right the uneddited model.