Course Info

Time to 3D Design and prototype!

CAID2 Advanced level step 2 for TD

3 credits

This 3-point course is in the first year of Master and is a part of "Advanced Computer Aided Modeling and Visualization". (The other part is CAD)

The CAID programs used, on Windows based workstations, is:

• Alias Autostudio (PC only) from Autodesk

• VRed Pro from Autodesk and KeyShot (PC only) for Rendering and VR (Virtual Reality)

• Blender, Meshmixer (Mac&PC) and Netfabb basic 5.2 (PC, old vers.) for polygon work

Goal and contents

Students are given training in CAID on a deeper level in order to be able to create advanced 3D models and make effective visualizations.

The aim is to give a more in depth knowledge on how to use several CAD tools to achive error free 3D-printing and milling files

Expected learning outcomes

After having completed the course, the student will be able to:

• work independently with CAID tools when applying computer aided design processes, from concept draft to complete prototype.

• analyse a model, from the model choose relevant modelling strategy, and carry out surface modelling from the chosen strategy.

• visually present your virtual model in various ways, such as a rendered and printed out illustration, an animation that is rendered and compiled as a movie, a real-time presentation on screen or via projector.

• account for how you design CAID-files for milling and for freeform creation (3D-printing)

• account for how to scan a physical object and then continue the modeling work in a virtual 3D environment.

Prerequisites

Completion of CAID 1

Syllabus

CAID - Advanced level, step 2 for TD, 4.5 Credits

Blender Intensive day 2-5

Indepth SubD modelling

External teacher
Surface Designer from Volvo Cars

Oskar Lorentzon 

Surface Designer | Concept Interior

Day 2

Short introduction about me (Oskar Lorentzon)

Cloud sharing again

• What I am doing?

• Collaboration between designers and surface modelers.

• How 3D volume sketches can improve this collaboration

• Why a polygon tool.

• Why Blender is so important for Designers.

• Topology puzzle, the most common shapes related to interior and exterior.

• Bonus material, building a Toy car, step by step

Getting to know Blender

Exterior: Basic setup, how to start, A template file

Day 3

Important vocabularies and concepts to know:

• A good topology, what does that look like?

• Theoratical corner ("Theoreticals")

• How to easily achieve a "Lead-in"

• Zebra shaders, ISO-angle

• Twists

• Build a volume 3D-model from an existing exterior.

• Or support when you are doing it with your own Design.

Demonstration:

1. On how to start out with clean surfaces

2. How to "Save" bad surfaces with the goal to be able to make a design decision. Fix of topology and edgeflows.

Own work with your "day 1" car.

Apply your learning to improve your own models "woobly" surfaces. Or fix a premade 3D-model.

Day 4

Demonstration:

• Advanced methods to make big and fast changes while keeping a good topoly

• Bevel modifier seams

• Shinkwrap modifier

• Bezier mesh shaper (or mira tools)

• Lattize

• Give definition to a prepared volume model

• Some Blender tricks to achieve some visual detailing

Own work with your 3D-model

Convert your car model into a compact model. Include a mannekin as a scale reference

Demonstration:

• Materials, Shading or a car seat

Day 5

Presentation:

• How could a design input look like?

• What is easy to work with?

• "Good enough" on a short notice (high time pressure)?

• Common misunderstandings

Demonstration:

• Visualization

• Simple tricks with shaders and lights

The difference between different CAD-formats:

When are these used?

• Pointcloud

• Meshes, Polygons

• NURBS

• Solids

Very important file formats:

STL, OBJ, FBX and Iges, Step

Tips & Tricks with Netfabb and MeshMixer

UNION in MeshMixer

Meshmixer: Adjust polygon size at intersection before Boolean Union! Very stretched polygons might cause problems. Stive for similar polygon size on both parts at intersection.

• • Use Select > Edit > Remesh > Linear SubDivision

  • Or use a brush. Sculpt > Brushes > Refine

Repair and export STL from Netfabb

• Use Repair and possibly go for an Automatic Repair. Right-click and save as Bin STL

Week 3
Anim & Rendering

First: Finalize your earlier assignments! :)

Finish up the CNC-assignment

David Risberg is accessible all week in the workshop for Roland and CNC-milling support