P3
Practical 3 Cardboard Journey
Background🔍 ✅
For this practical, we have learnt about the fundamental of prototyping using cardboard🗂. One of the best ways to gain insight into a chemical product design is to carry out some forms of prototyping. Prototyping involves producing an early, inexpensive💸 and scaled-down version of the product in order to reveal any problems with the current design. It offers designers the opportunity to bring their ideas to life, test the practicability of the current design, and potentially investigate how a sample of users think and feel about a product.
Cardboard is a very important❗material for prototyping as it is inexpensive, sturdy, and easy to work with. It can be much faster to build with cardboard than wood, metal, or plastic, and the tools🔧🔨needed are a lot cheaper.
Pre-Session Preparation📒📔📕✅
For our pre-session preparation, we were required to write a literature review on Corrugated Fibreboard, normally known as “Carton Box Cardboard”📦. The link shown below is used as the reference
Literature Review on Corrugated Board:
A corrugated board is made up of 3 components which are a sheet of corrugated or “fluted” materials in the centre, placed between 2 layers of paper – the outer (commonly made of Kraft paper) and inner (made of Test paper) liners. The side with fluted material is glued to the flat paper line, adding rigidity and stability to the paper. Kraft paper is stronger than Test paper and thus used as the outer line. “80 gsm” is an abbreviation of the weight of paper. The additional liner gives extra rigidity and strength, allowing packaging for heavier items. The flute, normally made from waste-based fluting is the corrugated section between the two liners. The height of the flute can affect the performance characteristics of corrugated boards. Fine fluted such as “E” is used to manufacture lightweight retail cartons while a coarser flute-like “A” or “B” is used for transit packaging. A combination of fluted can create a more rigid structure to hold heavier items. For instance, a double with the combination of B+C flutes are called BC flute. Board manufactured with 125gsm Kraft outer liner, a 125gsm Test inner lining and a B fluting is written as 125K/B/125T. Therefore, it is possible to have various boards with different parameters to meet their performance, respectively.
Actual Practical😍🆒
Back in school, for the first hour of the lesson, we learned a bit more about the benefit of using cardboard to construct our prototyping. Cardboard is used simply because it is cheap💵, recyclable♽ and easily accessible. Afterwards, we were introduced to different ways to join pieces of cardboard together. Then, we started on our hands-on practical👐 to produce a visual board showing different ways to join cardboard together. Finally, we briefly presented our visual board to the class on our most preferred journey.
Safety Precautions!!! ❗❗❗
☑We are using a pen knife to cut the cardboard, so it is essential to wear an anti-cut resistant glove as well as a nitrile glove to protect our hands from being injured.
☑Putting our bag underneath the table so that we won’t step on it and trip over.
☑Only switch on the hot gun glue power switch when needed to be used. When handling with hot gun glue, refrain from touching the tip of the gun as it is very hot, which may burn our hands.
Materials Needed for Hands-on Practical 🔧🔨✂
- Penknife 🗡
- Hot gun glue
- Nitrile glove 🧤
- Anti-cut resistant glove
- Cardboard 📦
- Long metal ruler 📏
- Superglue
- Cutting mat
- Markers
- Fastener
Types of Joint Attachments/Figure Made
1. Tabs
2. Score + bend
3. ABS + Slob
4. Flange
5. Gusset
6. Slots
There are another 2 types of attachment we have found online as well which are
7. Brass fastener
8. L-Brace
Process 😀➤😩➤😣➤😀
During the actual lesson, apart from learning each respective type of attachment, we were also made to make all these parts by ourselves without the teacher’s guide. By looking at each part, we learn how to visualize how these parts look in 3D and how we would fold or cut them to obtain that shape.
We made a windmill🍃 that compromises many parts such as gussets with a combination of L brace over the gusset to reinforce the structure hence making it stronger. Apart from those 2 attachments, we have also used a brass fastener on our windmill, this part allows for the windmill to spin. These are all the parts that were used. However, there should have been more attachments used if we had more time. What we could have done differently is that the base of the windmill could have been made of tabs so that the bast of the windmill is steadier. Secondly, we could have also added the insets into the cross-section of the windmill to further support the structure to make it stand better.
End-Product 🔚👏
Little Assignment 📕😌
Upon completing our practical, we were given a little homework to complete it at home. The assignment was to assemble the Winged Unicorn🦄😍. This Winged Unicorn is created by Mr Bartholomew Ting, a graduate of NUS (National University of Singapore) Business School.
1. While assembling, pay special attention to the type of folds and joints that are used. Record your observation.
- The type of folds and joints used are tabs + slots. Most of the parts are connected using this joint as it is highly effective.
2. For the blog entry, document the assembling process, includes at least 3 photographs.
- Firstly, we have to build the body of the winged unicorn. It is done by folding and joining the legs together.
- Secondly, we build the head and the neck of the winged unicorn.
- Lastly, we attached the wings and the head to the body, and also the tail, mane and the horn.
- We have used a rubber band to make the wings move just like in the video. It is done by tying the rubber band twice around the chest area of the unicorn, it is done twice because the rubber band is too loose on the unicorn. Next, drag one side of the rubber band and hook it to both wings as shown in the photos below.
Figure 10: Rubber Band Tied Around the Chest Area
- To move the wings, we can slide the finger into the rubber band and pull it towards the back of the unicorn. When we do it repeatedly, it will start flapping.
4. Sketch the mechanism that you will put in to automate the wing flapping. An example is shown below.
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