Models and Prototypes Workshop I

First project: Toothbrush handle

Tania A. Muñoa Moranchel

Alejandro AcuñaJanuary 14, 2014

What is a toothbrush handle?

Toothbrush handleBrush (Bristle)

Toothbrush head

Objectives

• The student will design a toothbrush handle using the design process as follows: Fast sketching, 3D sketching, conceptual models and ergonomic model.

Objectives

• The student will perform testing and evaluation through focus group, in order to define the most appropriate form (to build the ergonomic model).

Example: Maestro toothbrush for the luxury by Chow Eason

http://www.coroflot.com/easonchow/Maestro-toothbrush-for-the-luxury

Design a toothbrush handle

• The student will research (benchmarking) on the object to be designed and define a concept.

Design a toothbrush handle

• Based on a concept, you will do fast sketching and 3D Sketching for define the initial shape and dimensions.

Design a toothbrush handle

• Based on the chosen proposal in sketching and 3D sketching, you build a conceptual model with rigid material (“pink” foam in this case).

Design a toothbrush handle

• Then you will build four more conceptual models to evaluate in a focus group (five total).

Conceptual model raw (resurface) to evaluate in focus group

• Finally you will build an ergonomic model considering all the changes and comments from the previous focus group (about size, shape, perceptions, etc.).

Design a toothbrush handle

Ergonomic model• Anthropometric and ergonomic features.

• Must to be resistant to be manipulated.

• Model in white color with details of:– Textures (smooth, rough, scratched,

sandblasted, etc..)– Concavities.– Position and size of applications (toothbrush

head).

Design a toothbrush handle

Conceptual and ergonomic models requirements• Full-scale (1:1).• Anthropometric dimensions: realistic

dimensions, the right size to grip (handle), proper visual weight (depends on the proposal).

• Conceptual model raw (without finishes) and ergonomic model patching and painted white.

• In ergonomic model you can use standard parts (which already exist) as toothbrush head and other complements.

Homework 1: Research and sketching

• Research about the object, find the information required to generate a concept and start sketching.

• Perform a series of quick sketches (at least 5), serve them to start with the 3D sketching in class.

Schedule (first part of semester)No. Date Topics Subtopics Activities Homework

1 14-01-13Course introduction and first project

presentation

Actividades del curso, políticas de evaluación, conceptos generales y

proyecto 1er parcial.    

2 17-01-13 3D Sketching3d sketching: qué es, cómo se ejecuta y

para qué sirve. Conceptualización y visualización de ideas.

Revisión de investigación, bocetos y conceptos. Comienza exploración de la forma (3d sketching)

Investigación del concepto y primeros bocetos. Material para la clase: plastilina, batería, cartón, masking tape,

cutter, exacto, pegamento blanco, espuma, lo necesario.

3 21-01-13 Conceptual modelModelo conceptual: qué es, cómo y para

qué funciona. Técnicas de modelado. Ergonomía y antropometría.

Revisión de 3d Sketching, decidir el diseño a seguir y comenzar con escultura de espuma para

modelo conceptual basado en el concepto elegido y antropometría básica.

Material para la clase: Bocetos, 3d sketching, espuma rosa, cartón, pegamento blanco, exacto, cutter, lijas

distintos granos, masking tape, plantillas (de requerirse).

4 24-01-13 Conceptual model Técnicas de modelado, trucosRevisión modelo conceptual y continuar con el

trabajo.

Material para la clase: Modelos en espuma, lijas, cutter, masking tape, plantillas, pegamento blanco, bocetos,

cepillos, etc.

5 28-01-13 Conceptual model evaluation Focus groupEvaluación grupal de modelo conceptual (focus

group 1) Para la clase: Modelo terminado en bruto, etiqueta con

nombre, matrícula, materia y profesor.

6 31-01-13 Ergonomic modelTécnicas de modelado, trucos, corte,

lijado, pegado, pintura.

En base a las anotaciones del focus group realizar sus propias anotaciones para comenzar

el modelo ergonómico en espuma

Para la clase: Modelo conceptual, anotaciones de la evaluación, espuma, pegamento blanco, lijas de distintos granos, resanadores, cutter, exacto, etc.

7 04-02-13 Ergonomic model Técnicas de modelado, trucos, corte, lijado, pegado, pintura.

Continuar con el trabajo de modelo. Para la clase: Llevar el modelo en proceso, resanadores y lijas. Pintura blanca mate en aerosol.

8 07-02-13 Ergonomic model Técnicas de modelado, trucos, corte, lijado, pegado, pintura.

Continuar con el trabajo de modelo. Para la clase: Llevar el modelo en proceso, resanadores y lijas. Pintura blanca mate en aerosol.

9 11-02-13Part 1: Conceptual and ergonomic

modelsPresentación del proyecto y focus group

final.Evaluación grupal de modelo ergonómico (focus

group 2)

Modelo ergonómico terminado sobre una base de 1/4 de foamboard negro. Etiqueta impres con nombre del

alumno, profesor, materia, proyecto.

Surface finishes: State of the paint (not glossy with matte finishes in the same surface, should be uniform); the surface must be smooth and plain, without dots nor scratches; textures must be intentionally handled. Taking care of details.

50%

Processes: All processes such as cutting, drilling, slotting, assembling, gluing, etc.. Symmetry and forms.

40%

Presentation: Present the ergonomic and conceptual models on a base of black cardboard or black foamcore (1/8), printed label neatly trimmed with student's name and tuition, teacher´s name, course name and project name (Conceptual and Ergonomic Models: Toothbrush handle).

10%

First partial: 100%

Project 1: Toothbrush handle

Project 1: Toothbrush handle