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Commit 2f7b5ffa authored by Loes's avatar Loes
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updated biofoam recipe

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......@@ -19,7 +19,7 @@ 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 airdry/store.
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
......@@ -66,7 +66,7 @@ Approx. 150 ml
1. **Cooking the ingredients, creating foam**
- Simmer and slowly stir the mixture between 60-80 degrees celcius for 10 minutes, then add in the soap
- 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
......@@ -103,12 +103,12 @@ None.
**Post-processing**
The sides will curl upwards upon further drying. I cut off the thinner edges (they curl more) to create an eve sheet.
The sides will curl upwards upon further drying. I cut off the thinner edges (they curl more) to create an even sheet.
You can keep the sheet pressed at intervals of a day or so between kitchen paper and a stack of books to keep it flat if it curls up. Try to air it out too to prevent mold growth.
Store flat in a dry and ventilated room.
**Further research needed on drying/curing/growth?**
Yes. Casting solids or smooth surface might require a different process to prevent deformation.
......@@ -118,12 +118,16 @@ Yes. Casting solids or smooth surface might require a different process to preve
![](../../images/final_biofoam_mixing.jpg)*Mixing the ingredients at 80 degrees, Loes Bogers, 2020*
![](../../images/final_biofoam_dissolving.jpg)*The gelatin is dissolved, ready for the soap to go in, Loes Bogers, 2020*
![](../../images/final_biofoam_dissolving.jpg)*The gelatin is dissolved and thick, ready for the soap to go in, Loes Bogers, 2020*
![](../../images/final_biofoam_pressing.jpg)*Pressing the sheet underneath some books to keep it flat, Loes Bogers, 2020*
![](../../images/foam4.jpg)*Whisking the liquid vigourously to create small bubbles, Loes Bogers, 2020*
![](../../images/foam5.jpg)*Releasing the foam from the half-dome molds, Loes Bogers, 2020*
![](../../images/final_biofoam_setup.jpg)*The lego mold with the sheet after trimming and drying: hardly any shrinkage (width/length), Loes Bogers, 2020*
![](../../images/final_biofoam_pressing.jpg)*Pressing the sheet underneath some books to keep it flat, Loes Bogers, 2020*
## Variations on this recipe
- Add a **natural colorant** such as a vegetable dye or water-based ink (e.g. hibiscus, beetroot, madder)
......@@ -172,6 +176,7 @@ Using plant-based ingredients is not by definition petrol-free. Imagine they hav
- Vegan: no
- Made of by-products or waste: yes
- Biocompostable final product: yes
- Re-use: melt with heat and a splash of water, and recast
Gelatine-based bioplastics can be recasted by melting them in a pot with some water. Recycling them with PET plastics contaminates the waste stream. Compost bioplastics in a warm environment with sufficient airflow.
......@@ -208,6 +213,7 @@ The foam half domes are more rigid when completely dried, but still allow for so
- **Chemical resistance:** needs further research
- **Scratch resistance:** poor
- **Surface friction:** sliding
- **Color modifiers:** none
## About this entry
......
......@@ -150,6 +150,8 @@ Yes/No/Needs further research
- Vegan: yes/no/needs further research
- Made of by-products or waste: yes/no/needs further research
- Biocompostable final product: yes/no/needs further research
- - Re-use: [free text]
Needs further research?: Yes/No/Not sure
......
docs/images/foam2.jpg

121 KiB

docs/images/foam4.jpg

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docs/images/foam5.jpg

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docs/images/foam7.jpg

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......@@ -10,7 +10,8 @@ A proposal for an online accessible *open-source material archive with DIY recip
A selection of 25 biofabricated materials is already documented and forms a suggested "starter archive" for anyone who would like to build their own physical archive with samples. Building the basic archive will teach you the foundational techniques that most other recipes will build upon, and require you to collect the basic tools and ingredients you will need.
I analysed at a number of online and offline archives, such as Materiom (link), Materiability (link), The Institute of Making at UCL London), Material Archive Textile Lab Amsterdam (link), Material District (link) for how they....
I analysed at a number of online and offline archives, such as Materiom (link), Materiability (link), The Institute of Making at UCL London),
Material Archive Textile Lab Amsterdam (link), Material District (link) for how they....
- item 1
- item 2
- item 3
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