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biofoam.md 10.25 KiB

BIOFOAM (surface, solid)

Tactility & sound impression

Description

A thin, textured sheet, and half domes of foamy, flexible bioplastic. Gelatine-based.

Physical form

Surfaces, Solids

Fabrication time

Preparation time: 1 Hour

Processing time: 5 days

Need attention: after 3 days to demold, and keep pressed. After another 2 days to take them out of the press and air dry/store.

Final form achieved after: 1 week

Ingredients

  • Gelatine powder - 12 gr
    • Functions as the polymeer (makes it hard)
  • Glycerine - 12 gr
    • Functions as plasticizer that bonds with the gelatine (makes it flexible)
  • Water - 150 ml/gr
    • To dissolve and mix the polymeer and plasticizer
  • Dishwashing soap (organic) - 1 tsp
    • Is the expanding agent that makes the mixture foamy

Tools

  1. Cooker or stove (optional: temperature controlled)
  2. Pot
  3. Scale
  4. Spoons
  5. Whisk
  6. Lego sheet (or other textured surface)
  7. Egg holders (or other mold), these came with my fridge

Yield before processing/drying/curing

Approx. 150 ml

Method

  1. Preparation

    • Weigh your ingredients
    • Prepare the molds you wish to use

  2. Mixing and dissolving the ingredients

    • bring the water to the boil
    • optional: add natural dye if you wish to use color
    • add the glycerine
    • add the gelatine
    • keep the temperature below 80 degrees celcius while stirring gently, until the gelatine is dissolved

  3. Cooking the ingredients, creating foam

    • Simmer and slowly stir the mixture between 60-80 degrees celcius for 20 minutes or until it's thick like a syrup or honey, then add in the soap
    • Whisk vigorously to create foam bubbles and simmer for another 2-5 minutes until the mixture thickens
    • Stir slowly to let the bigger bubbles pop until you have a foam with small bubbles

  4. Casting the foam

    • Cast onto the lego sheet (or other textured sheet) and spread out if necessary. Cast in the center of the sheet and allow the material to spread itself, keeping the pot still for even results. Or cast into the cups.
    • The material will shrink a lot so make the layer thicker than you want the end result to be.
    • Let it dry for 48-72 hours at least before releasing

Drying/curing/growth process