Semi Finals Feedback

13/7/17

Feedback received for prototype:
Maybe make it out of recycled metal http://tvtropes.org/pmwiki/pmwiki.php/Main/SetAMookToKillAMook
Put one somewhere in the school
Safety precautions
Ensure success rate -> We need to go pump iron

Slide feedback from Mentor

12/7/17
Presented our slides to our mentor

Comments:

More practice needed: presentation too long
Prototype looked too dirty
Words on slides needed to be bigger


Follow up:
Slides were edited, prototype was wrapped in green tape:

The Second Prototype

4/7/17
 The Second Prototype



Can fits in through right chute
Slips into crushing chamber, when crushed it will fall through the gap

 

The First Prototype

29/6/17
First prototype completed
   
Weight slams down vertically on can to crush it

Issues: Can needs to be put in and afterwards manually removed

Meeting the CEO + Engineer

15/6/17

Had discussion with former CEO of the Sino-Singapore Tianjin Eco-city, Mr Goh Chye Boon

26/6/17

Met up with an engineer who agreed to help us in the instruction of our prototype

He had a different idea from us:

He wanted to crush the can vertically: No need for counterbalance + gravity works with the crushing force

He explained that the construction process was too dangerous for us to help with

We visited him every day after school to check on the construction and discuss the design with him

3D Model for consideration + more sketches

20/4/17

Created 3D model of the foot of the invention, a manual trapdoor and leg stands, with hooks to hang plastic bags




Sketches that have more detail of the mechanism (still a bit messy)

Online Meeting

15/4/17

Held an online meeting to discuss the prototype

- Narrowed scope to just cans instead of general trash (too general = compromising effectiveness?)
- First sketches of prototype:

Horizontal crushing mechanism operated by lever suggested in Prelims
Consider:
Trapdoor to manually pull out after can is crushed?
Material: 3-D Printed?