- Feasibility of material used
- Other possible suitable material
Feasibility of material used
- Using of cardboard for the sides are quite hard and
tension of rubber is needed to pull it down. - Using of rubber to pull down the card board would cause the tissue to break
when being pulled due to too much tension.
Other possible solutions
- Use of paper instead of cardboard due to it being softer
- Taking away the rubber as it is not needed
because paper is soft enough to fall freely
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