week 9 journal

Evelyne SetionoStudent No: 579870

Semester 2/2012Group 3

Module 3- Week 9

Final ModelAfter a few attempts in designing the final model in Rhino, I decided to change the body part into solid surfaces; with no holes on them. This prevents the light to pass through the body part. I used the basic 2D panel for this part which is the box pattern.

Final Model

Rendered mode(with lines)

Rendered mode(with no lines)

Final ModelOne problem of this model is that the body part is not made up of surfaces, but meshes. Therefore, it couldn't be unrolled using ptUnrollFaces command. To solve this problem, I had to convert these meshes into surfaces by using MeshToNURB command. This attempt was succesful as I could convert it into surfaces which could be unrolled.

Rendered mode of the body part

Meshes

Surfaces

Final Model

Rendered mode of full modelShaded mode of full model

Prototypes

Tail Head

These are the unrolled sections of the tail and head part. I made 2 strips for each part.

PrototypesFor this prototype, I decided to use laser cuter for the cutting. It was more effective and less time-consuming, and I also wanted to know the benefit and the end-product of using laser cutter rather than hand-cut. I prepared the fablab file as shown below.

The red lines indicate scoring (the laser cutter will cut it lightly)

The black lines indicate cutting (these lines will be completely cut)

The magenta lines indicate pages (the outline of the paper chosen which has a dimension of 900x600 mm)

PrototypesThese are the results of the laser cut. The picture on the right shows the strips from the tail part, while the picture on the left shows the strips from the head part. These pieces are cut beautifully and accurately.

However, there are some problems I found from these strips:1. There will be some adjustments and refinements again for the top part because the distance between the triangles were too small, therefore some of them broke apart.2. Reduce the holes or make the holes smaller to have effective lighting.

Tail part Head part

PrototypesThe pictures on the left are the constructed model of the tail section. I constructed using PVA glue and it turned out quite messy as I put too much glue at some parts. Also, I didn't know the position and direction of where the strips should be attached together, therefore it might not be very similar to the digital model. The panels from the first strip are quite difficult to parallel with the second strip as they have different sizes.

I have also the same difficulty with the top part which is the gluing process. This time I attached the second strip panel by panel to the second strip, and it looked neater than the tail part. However, some improvements can still be done in constructing the model.

Final UnrollingHead

Final UnrollingTail

Final Unrolling

The red lines indicate scoring (the laser cutter will cut it lightly)

The black lines indicate cutting (these lines will be completely cut)

The magenta lines indicate pages (the outline of the paper chosen which has a dimension of 900x600 mm)

Fab Lab File

Final Unrolling

To resolve the breaking of the card because very small distances between the triangles, I tried to set them into scoring so that the laser cut will only cut it lightly rather than cutting it completely. Some triangles, usually in corners or the distances are the smallest, are outlined completely in red so that it could be cut manually later on.