1.
Material- Fibers- Saw dust, Binders- Cooked rice
Process
Binders
Take 400gms of rice in a cooker and cook them well.
Let the rice cool for a while and then add it to a grinder.
Grind the rice well and add water to change consistency.
Fibers
Strain the saw dust well to obtain all even particles.
Add the binder in the process mentioned above and knit it properly.
Set it up in the mould and remove the in 10-15 mins.
Leave it for drying.
Once the sheets are dried completely apply the binder on one sheet and place it one above the other in a sandwich method.
Observation
1. Combination of saw dust and cooked rice paste spreads out well in the mould and sets well.
2. The cooked rice paste takes time to dry but turns transparent once dried.
3. When rice is cooked two things happen
Water gets absorbed in the grain
Heat softens the starch which binds the sawdust
Cooked rice grinded, diluted to desired thickness with water is a good binding material.
2.
Material - Fibers- Paper and fevicol (experiment 1.1) , Binders - Sago or tapioca pearl
Process
Fibers
Take a sheet of paper used to make paper bags which is 145cms in length and 55cms in breadth.
Cut them into smaller pieces and soak them in water for 3-4 mins.
Grind them in a grinder and spread it for air drying so that it becomes almost like powder.
Take 500gms of the powder and almost the same amount of Fevicol and mix it to form dough like consistency.
Set it well in a mould to gain perfect geometry and remove the mould after 10-15 mins.
Leave it for drying.
Binders
Take 350gms of sago and soak it in water for 8-10 hours.
Grind it and add water to control its consistency and make it like a paste.
Once the sheets are dried completely apply the sago paste on one sheet and place the other sheet above it
Observation
Combination of paper and fevicol in almost same proportion formed a rigid solid after 24 hours
Sago is made of starch so any contact with water will cause the sago to dissolve into starch balls, it affects the texture of sago as it makes it more sticky and gluey. It dries up faster than cooked rice or edible gum.
3)
Material- Fibers - Jute fabric, Binder - Cooked rice
Process
Fiber
Take jute fabric and cut them in smaller sheets of 40cms in length and 17 cms in breadth.
Binder
Take 2.5 cups of rice .
Wash them if required.
Add about 500-600 ml of water and rice in a cooker and cook them completely
Grind the cooked rice in a grinder
Now start spreading the grinded rice mixture on the jute fabric and add another layer of jute fabric on it. Use a papad maker or a rolling pin to compress the layers together. Leave it to dry.
2 layers of jute fabric and cooked rice in between
3 layers of jute fabric and 2 layers of cooked rice
Observation
The cooked rice paste takes time to dry but turns transparent once dried.
When rice is cooked two things happen
Water gets absorbed in the grain
Heat softens the starch which binds the sawdust
Cooked rice grinded, diluted to desired thickness with water is a good binding material.