3D Printer Pencil Sharpener - Deluxe Edition

 

Challenge: To create an original design that incorporates into the print a physical object with a purpose.

Background: We detailed this projects start earlier this month when we tasked students with the challenge of having a physical sharpener created to work in conjunction with a student engineered 3D Print.    The students for the process were able to work with a partner on the design.   The challenge first stage was the design then the students were to undergo testing to ensure the design was viable, balance and had a purpose.

Some of the challenges that the students came up against were aligning the sharpener correctly into the print, ensuring that they had a suitable 'exit' location for the pencil sharpening once it was used.

Once the inserting mechanisms had been devised the students then spent time working on the other aspects of the design, inserts for pencils, names and shapes.   The students wanted to use a multi coloured PLA for the affect that it would create - this is a PLA which is called 'Cotton Candy'.

Resources Used: iPad and Tinkercad App for the design, Cotton Candy Bambu PLA, Bambu P1S.

Level of Difficulty: Medium/Hard.   This is one of those tasks that appears simple but there are layers and elements to it, particularly when the students start to attempt to have multi entry and exit points and details that need to work in conjunction with each other.

Size: This version of the print measures 50mm across and was 55mm long and 40mm high.   

Cost/Price: This unit as it stands uses 42g of PLA filament to complete the print, including some 12g of rafting (for the lettering and the inside of the box).   This had a price point of $1.07c to complete.

Timeframe: To complete this project the printer took a (now standard) six minutes to warm up and one hour twenty four minutes to complete the print, for a combined total of one and a half hours.

What we would do differently/Next steps for the students: There is a gap in the side of the pencil sharpener holder as shown left.   This has been created because the internal storage on the other side of the wall is too close to the side of the print.  It needs to be moved slightly or reduced in size which will correct the error.   The final step is for the students to undergo testing to ensure that the item works as it is intended.  If it does not the students will then need to look at reworking and refining it.