Cooking our own Fab Lab biomaterials - SCOPES Digital Fabrication

Lesson Details

Age Ranges
Standards
Fab-Fabrication.1, Fab-Design.2
Author

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Author

Zulema Josa
Zulema Josa
Other
Architect, designer and technology teacher.   Read More

Summary

Within the study of plastic, the students will cook different bioplastics with different recipes and proportions of ingredients to study the mechanical properties of the material. With a laser cutter, once they got the right material, they could design and make an object to see if it works.

 

The aim of this activity is to raise awareness about the use of materials in a Fab Lab and its composition by creating our own compostable bioplastic sheet following the instructions step by step. The students will be aware of the time and care that a biomaterial creation process requires.

What You'll Need

Instruments (every 2-3 people)

 

A pan

A wooden spoon

A meter

A weighting scale

A teaspoon

A knife

A mixer

A 1m x 0.5m non-porous board

 

Ingredients (for a board)

 

100 gr of cornflour

50 ml of white vinegar

50 ml of vegetable glycerin

100 gr of organic waste (orange peel, lemon, watermelon, beetroot, onion, coffee grounds, etc.)

1200ml of water

 

The Instructions

Cooking bioplastics

Cooking bioplastics with your own organic waste. (90')

Introduction (30′)

In this session, we will present some examples of bioplastic made with different recipes. The students will touch the examples to feel their textures, thicknesses, different grades of elasticity, etc.

 

 

After that, we will laser cut a piece of bioplastic to see how this material works with that technology and to do some examples of cutting and engraving to define the parameters we could start to use.

 

 

 

Cutting parameters

Power: 30

Speed: 40

 

Engraving parameters

Power: 12-15

Speed: 200

 

Cooking our compostable bioplastic (60′)

 

As every student has been asked to bring a minimum of 100 gr of organic waste to this session, we will cook a recipe using it.

 

 

Instruments (every 2-3 people)

 

A pan

A wooden spoon

A meter

A weighting scale

A teaspoon

A knife

A mixer

A 1m x 0.5m non-porous board

 

Ingredients (for a board)

 

100 gr of cornflour

50 ml of white vinegar

50 ml of vegetable glycerin

100 gr of organic waste (orange peel, lemon, watermelon, beetroot, onion, coffee grounds, etc.)

1200ml of water

 

 

Know how:

 

1-Chop the organic residue and beat it with a bit of water.