Blog Post #4 – Reflect and Share


This is my final design. I found thinner axels which could fit real wheels onto, so I decided to abandon the bottle caps and replace them, except these wheels were also light, they weren’t heavy like my first design’s wheels. And now my car looks more aesthetically appealing.

How my car works: So it works by wind power, and it shows the transfer of potential energy to kinetic energy. So when the propeller is wound up, the elastic band which its connected to builds up potential energy, and once the propeller is released, all of the potential energy inside the elastic band gets released and spins the propeller so fast that it moves the car forward. This car motion is the kinetic energy.

Some areas of my process in which I was successful was the part where I managed to improve my design so it would be more aesthetically appealing. I was really worried about how the bottle caps would make the car look ugly, and so I’m proud that I managed to make the design look better. I’m also proud of my time management during this project because sometimes I don’t really manage my time well, and knowing that I had missed 2 classes already, I’m glad I managed to finish my project before the deadline.

I think an improvement I should’ve done since the beginning is that I should’ve recorded more photos and videos of my design process. I should’ve taken a photo at least of my first design so I could’ve shown the process better.

This is a test of my final design:

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Blog Post #3 – Testing

This is the second design of my propeller-powered car. It uses water bottle caps for the wheels instead of heavy rubber wheels. I didn’t get any footage or photos of my first design, but I mainly used real wheels, but they were too heavy, and they would fall off the axels when in motion because they didn’t fit properly. So as an improvement, I wanted to use lighter wheels which could fit onto the axels.

I reckon my process has been going well since I’ve missed heaps of classes, I feel like I’ve been really efficient in this project. I’ve stayed on task, and I finished my car in 3 classes.

If I changed anything to my design, it would be to change the wheels so that they would be real and not water bottle caps. If the wheels were real, they would be more aesthetically appealing, and they would probably provide more distance when driving. But I can’t find any axels anywhere that can fit inside the real wheels, so I don’t know how I can make the actual wheels fit onto my current axels.

This is my test run:

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Elastic Car – Engineering Project Blog Post #2


Monday: Get model approved by the teacher, and move forward with making the product

Wednesday: Continue Building

Friday: Touch up and hand in



  • Clear Plastic bottle (24cm x 6cm)
  • 4 Wheels
  • 1 Elastic Band
  • 2 Skewers
  • Plastic Fan (will probably have to make my own)
  • A plastic that can be cut to make a fan



  • Puncture 2 holes near the front of the bottle, 2 near the back, and 1 in the centre of the bottom, to attach the skewers and the fan
  • Attach the elastic band to the fan via tape
  • Feed the elastic band through the hole and tape it to the lid
  • Attach the 4 wheels onto both sides of both wooden skewers




Edit: This involves a lot of taping which isn’t very reliable for the elastic band. It will also be difficult to attach the fan.

Timeline: Same as above


  • Pop-sticks
  • 1 Fuji water bottle (for its rectangular shape)
  • Wooden Skewers
  • Wheels (can use the ones provided but I don’t know how heavy they are and how it might affect the car, will try to find lighter ones)
  • Thick, 23 cm straws (I have some at home)
  • Sticky tape
  • A fan/propeller 12 cm in diameter (I can order a propeller plane from tao bao which comes with a 12 cm propeller)
  • Paper clip(s)
  • Glue


  1. Glue 2 23cm straws onto the bottom of the Fuji bottle
  2. Attach a wheel onto the end of a skewer
  3. Attach tape on the end of the skewer (to keep the wheel from falling off)
  4. Slide skewer inside the straw
  5. Attach wheel on the other side of the skewer and add tape
  6. Make sure wheels can spin freely
  7. Repeat steps 2-6  for the next straw
  8. Glue 3 pop sticks together
  9. Attach the propeller on one side and a bent paperclip on the other
  10. Hook 2 rubber bands onto the fan and the paperclip
  11. Glue the propeller pop stick contraption to a support pop stick on top of the Fuji bottle
  12. Glue the paperclip side of the propeller pop stick contraption onto the bottle itself
  13. Wind up the propeller and release it

Revised Model:

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Engineering Ideas for Project

In this project, we have to make something that shows the transfer of energy.

One of my ideas is that I could make a Rubber Band Car, which would show the transfer of elastic energy to kinetic energy. The fan would be wound up and released (elastic energy) and then the car will move forward (kinetic energy)

One thing that is bad about this design is that it’s pretty tacky I don’t know.

Another idea is to make a ball and ramp and show the transfer between potential energy and kinetic energy when the ball moves down the ramp. Gravity is also playing part in this as well. 

If I make a better design than this so it looks visually appealing, I would.

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Robotics Reflection

In this project, I am planning to make a person that is playing the piano. I wish to make this because the piano is one of my best hobbies that I do and it is a big part of my life. I will make the person using 4-millimetre acrylic plastic, which I will use the laser cutter to make the pieces, and finally, I will 3-D print the piano.


In Scratch, I made the motion that my person would do. It shows the arms moving up and down, and later, I will put a piano in front of the arms, so then the person is playing the piano.

To actually see what it would look like, I needed to model it somehow. Using the software “Fusion 360”, I was able to make the piano player, along with his piano, and his stool. Here is what my final design looks like.


And to get a feel for the motions I’ll be implementing to my person, I made a cardboard model to show what the motions would look like on a to-scale model,

My plan from the beginning was to Laser Cut all the materials I needed to make the person, and 3-D print all of the accessories that came with it, the piano and the stool. Once I’d laser cut the materials for the person, I’d fit the pieces so they would make the shapes they were designed to be arranged in, and then glue them together to make the person. The 3-D printing and the Laser Cutting ending as well as I could’ve hoped for, but the glueing stage didn’t work for me. When I was glueing, the glue was making the plastic look ugly, leaving scrapes and marks, and the glue didn’t last very long, because the boxes would keep snapping off. As a result, the person isn’t the shiny robot I wanted, it’s just less shiny.

I also eventually had to glue the arms onto the servos, which I didn’t plan on at the beginning, because I assumed the holes that I made would be tight enough to hold the arms to the servos. Sadly, this didn’t happen for one arm, so my only choice was to hot glue it to the servo, and thankfully, it didn’t limit its movement. But, it also meant that it could snap off the servo at any time, which it did, overnight. The result was a hot gluey mess of an arm, which meant I had to scrape off the old glue and glue it again.

I think if I were to do this project again, I would probably try using a lighter material (like wood) so that when I would glue it to the servo, there will be a less likely chance of the arm snapping off. Actually, now that I’m thinking about it, maybe I can find a linkage that won’t involve glue at all because glue is too risky to use for something like a final project. If I’ve learned anything from this unit (besides from learning how to code, design, laser cut, sawder etc.) it’s that I shouldn’t use glue with heavy objects, because I see now it obviously won’t stick together for very long.

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Stop With The Fossil-Fuels – A documentary

During this Capstone Project, I have been researching the benefits and problems of Renewable Energy but decided to base my video on advertising it. I have noticed that fossil-fuels have been a growing problem for the world (considering greenhouse gases and global warming/climate change), and we need to stop using it immediately. When I found out the effects fossil-fuels was having on people and families, I couldn’t turn a blind eye. One thing I have learned throughout this project is empathy for those less fortunate than us, and it has helped change my beliefs about the world. One of my skills I called upon during this project was my communication skills, as we were challenged to conduct our own survey to collect some primary source information for the project. To next year’s Grade 8’s, I want you to know that this project might seem like the hardest thing in the world, but by the end of it, the satisfaction is the greatest feeling ever, and your view of the world might change, for better or worse, knowledge is good. Thank you.

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Polymer Journal #4

Description of all prototypes:

Prototype Observations Strengths for this Prototype Limitations for this Prototype
#1 = super slime (green, runny) Squishy



One of my favourites (when in bag)

It is entertaining and fun to use

Try to make it less runny
#2 = super slime (pink) Stable

Squishy but doesn’t fall apart


It is more like a standard stress ball compared to others. Is Easy to use. Try to make it less stiff
#3 = super slime (yellow) Compact yet mouldable



One of my favourites (when in bag)


Easy to use

Try to make it less crumbly
#4 = super slime (green, less runny) More wet on inside

Squishy and mouldable

It is entertaining and fun to use I see no limitations
#5 = super slime (blue) Wet inside




It is entertaining and fun to use I see no limitations
#6 = gloop White

Extremely sticky

Too hard to poke at

Wasn’t fun to use or easy to concentrate with



It was way too sticky
#7 = gloop Not as sticky


Very Fun to use

Easy to concentrate with

It was good to poke at and the consistency was good It could be improved by making it a little more runny
#8 = gloop Light pink

50/50 softness

fun to use

it neither helped or endangered my concentration

It was good to poke at and the consistency was good It was slightly harder than it was before
#9 = gloop Not fun and not easy to concentrate with


Too hard

Cool colour?


Try to make it less hard
#10 = gloop Very fun and very easy to concentrate

A good amount of soft

The consistency of the gloop was very good and could be easily poked at I see no limitations

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Polymer Journal #3

Describing our Polymer:

  1. We are making a Stress Ball
  2. We want the physical properties of our polymer to include:
  • Slightly Bouncy
  • Soft and Squishy
  • Comes in cool colours and smells
  • Easy to use


Our Plan to Develop our Prototype:

*Prototype = sample/model

1st we will…

Create Gloop and Super Slime because they are our top choices for our stress ball.

2nd we will…

Change the number of substances used to fit our wanted properties.

3rd we will…

Test our prototypes to see if they meet our standards.

Finally, we will…

Select our most promising prototype and present it to the Dream On panel.


Our Method for Testing our Prototype:


Method Why we chose this/How this will be effective
Keep it out in open air for a week to see if the slime dried or expired I chose this method to see the durability of the slime and to see how long it would last
Bounce and squeeze it for a long time To see how sustainable the slime is and to see how it can help us concentrate.
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Polymer Journal #2

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Polymer Journal #1

Sites used:

Popper, Dan. “Rayon.” How Products Are Made,

Francois, Carol, and Bronwyn Harris. “How Is Nylon Made?” WiseGEEK, Conjecture Corporation, 13 Apr. 2018,

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