Build your own pencil sharpener and give a second life to an old glass container.
 
This  kit contains everything you need to build a crank operated pencil sharpener. You just need to find an empty glass jar to attach to collect the shavings.
 
How does it work?
First, remove the wooden parts and sort all the parts. Assemble the pencil sharpener according to the instructions in the brochure. It is divided into several steps: first install the pencil sharpener, then install the mechanism with the crank, and finally assemble the two together.
Find an empty jar 8 cm in diameter (the most common): attach the pencil sharpener to it with a rubber band to collect the skin of the pencil sharpener.
 
What will you learn?
- Different types of gears
- Bevel gears
- How bevel gears are used in everyday objects
- Recycling