Challenge: To combine a physical object with a 3D Printed original student design to challenge the students design and thinking skills.
Background: We've been able to have a number of projects that we've touched base with or revisited from year to year. This has allowed a range of students to complete the same challenge and we've been able to use resources and ideas for the students from year to year.
This challenge is based around a standard purchase from a dollar store, a pencil sharpener. The challenge is to take the sharpener and then build a 3D design around it to work in conjunction with it.
Some past examples (finished) of this process include this cartoon figure from 2019, the top hat design from 2024 or the tractor design from 2019. In each of these instances the students took an exisiting figure and modified it or created their own figure from scratch. Recently we've been working with SVG figures and this would be a good example that could do so.
In this early example shown here students worked with a pair (collaboratively as it is possible to do with both students using the
Tinkecad app).
Students used the knowledge that they have previously developed to insert a hole into the side of the design to feature their names, a hole for the insertion of the pencil and a location to hold the pencil shavings once sharpening is complete.
Resources used to complete this project: The
Tinkecad App, iPad, standard pencil sharpener, Bambu P1S, regular PLA.
Level of Difficulty: Medium/High. This challenge, which is not yet completed is going to really test the students as ultimately we would like a hinge and either a small door or a simple addition so that the shavings can be contained before being emptied into another location such as the bin.
Size: The print in its current state measures 70mm across at the front is 120mm long and 40mm high. If anything these dimensions could be reduced to make the print more 'tight'. However at this stage this is a demonstration and discussion point with the students.
Cost/Price: The unit as it stands at the moment uses 45g of filament and this has a price point of $1.12c. Adaptions of this print including a lid have already been produced and are awaiting printing - these additional features are increasing the print time and cost, although not substantially.
Timeframe: The print as it currently stands take one hour and ten minutes to complete. Again as noted this has already been refined to include a more detailed design, a lid and a working hinge.
What we would do differently/Next steps for the students: The lettering on the left had side photograph as shown needs some attention as the hole could be more refined. The pencil sharpener has been put in place with blue tac to hold it in place. If you observe carefully the circle for the insert of the pencil is not aligned correctly with the base of the print. The pencil sharpener in this situation would sit below the level of the circle and therefore not sit flush or easily fit, so this too will also need to be adjusted.
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