FINAL DEFENSE PRESENTATION MSBGDUWWWUW.pdf

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1. RECYCLABLE
MATERIALS AS DIY
PAPER SHREDDER: A
FEASIBILITY STUDY

2. Introdruction and Background
Paper Shredder - Cuts paper to protect sensitive
information.
Uses - Found in schools, offices, homes, and businesses.
Issues with Traditional Shredders - Expensive, wasteful,
and energy- consuming.
Benefits - Cheaper, customizable, educational, and eco-
friendly
Goal - Create a low-cost, effective, safe DIY shredder
Impact - Saves money, supports recycling, and ensures
secure document disposal

3. Materials:
dryer motor
steel rod
set washer
flat bar
plwood
cord
switch
knot screw
screws
nails
wood glue
adapter
epoxy
PROCESS
1. Find the materials
needed in the paper
shredder.
2. Gather all the
materials needed.
3. Prepare all the tools,
materials, and PPE
needed for the paper
shredder.
4. Assemble the parts
of the paper shredder
5. Conduct the
experiment to test the
feasibility of the
assembled device.
FEEDBACK
Conceptual Framework
INPUT OUTPUT
Paper Shredder
Made of Recycled
Materials

4. Objectives
To create a DIY paper shredder using recyclable
materials.
To test how well the DIY shredder works with different
paper types.
To compare its performance with a market-available
shredder.
To check its durability and usefulness.
To support recycling by using eco-friendly materials.

5. Research Design
Experimental Research Design
No respondent needed
The researchers will observe and measure how well the
shredder works.
Data is collected through experiments (e.g., performance
tests), not from people’s feedback.

6. Data Gathering Procedure &
Research Instrument
Construct the DIY paper shredder and test its
performance.
Use observation sheets to track shredding
speed, quality, and durability.

7. Statistical Treatment
Standard Deviation : Shows how much the
shredding rates vary from the average.
Formula:
Weighted Mean : Helps calculate the overall
shredding speed, considering different paper
types.
Formula:

8. Statistical Treatment
ANOVA (Analysis of Variance) : To compare whether
there is a significant difference between the shredding rate
of the DIY shredder and a market-available shredder
across different paper types.
Formula:

9. Results
Paper Type DIY Shredder (Mean) Market Shredder (Mean)
Intermediate Paper (60 gsm) 13.63 9.88
Yellow Paper (64 gsm) 14.5 16.88
Bond Paper (80 gsm) 24.44 28.25
Vellum (220 gsm) 36.88 29.30
Key Findings:
DIY shredder takes longer to shred compared to market shredder.
Thicker paper increases shredding time for both shredders.
Market shredder is faster and more consistent, while DIY shredder has more variation in shredding
time.
Statistical analysis (ANOVA) shows a significant difference in performance between the two shredders.

10. Conclusion
The DIY paper shredder works but is less reliable than commercial
shredders.
Thicker paper takes longer to shred, affecting performance.
DIY shredders need improvement in effectiveness, consistency, and
durability.
Commercial shredders are faster, more reliable, and better for
regular use.
Market-available shredders are the better choice for institutions
needing efficient and dependable shredding.

11. Recommendation
Use stronger materials for better durability.
Improve blade alignment and motor for better
performance.
Add safety features like blade covers and auto
shut-off.
Make it scalable for bigger shredding needs.
Promote DIY recycling to reduce waste.