3.I saved file in pdf format and cut design on laser cutter . Initially for verifying design I cut design using card board sheet. When I found it is correct then I go for acrylic sheet cut and assemble design and then my mold get ready.
4.Now for making bowl by using composite , I used following material.In real condition we have to use stainless steal for making bowl.As material for bowl should be food grade.But for prototyping I am using below material.Before choosing this materials I searched for various natural fibers and resins and then I list out below material for making composite.
It is Tissue paper,Natural glue and Burlp respectively.
The glue I am using is natural because it is made by adding hot water into the waste extruded by Babul tree.It is called as Saras. It become hard after drying.
Burlap is made by using natural fibers.It has good alignment of fibers.It will add strength to composite.It is cellulose.
I am using tissue paper to add hardness.It is also cellulose.
5.Procedure
I took glue in bowl and dipped burlap into that.Take it out squeezed it and put on mold such a that there is no wrinkle.
Then wet tissue paper by glue and cover all surface of burlap by it.Like wise I placed 2 layers of burlap and 2 layers of tissue paper.first one is of burlap ,second is of tissue paper ,third is of burlap and last one is of tissue paper
Then I cut unwanted part and put it in sunlight for drying.It get dried after 2 days of sunlight.It takes more time to dry in humid area.It looses its hardness in humid air.So I kept it in dry place.
It became hard after drying.I tested its hardness by putting heavy (half kg)material into it.As expected it clear the test. So we can say that this composite has good strength.
In this assignment I learned about various natural and artificial fibers,chemicals and adhesives.I also learnt about how to add strength in fibers using resin .