Thursday, December 11, 2025

3D Printing Junior Challenge: Cookie Cutters 2025

 

Challenge: For students to create an original, unique and working cookie cutter suitable for use.

Background: Its the final week of school in New Zealand prior to our summer break.  During this time we are trying to complete our end of year projects across the curriculum and we are also producing a range of designs that we are potentially publishing, printing and creating during the holidays.   One of the things that we have done is revisit some of the other successful projects that have featured on this blog and used the blog itself as a resource.

We were producing versions of these back as student projects as early as 2016 which you can see via this link.  We have also revised designs like this again in this post in 2019 and in 2022 we summarised our Christmas themed cookie cutters in the shape of Santa's sleigh with this post.

We also have gravitated towards projects that are realistic for the students to complete in a short space of time.  At present time with the main printers with the school is at a premium.   There are a number of classrooms using the machines and they are available and their use is encouraged for everyone.

We have a number of complicated projects due for the Bambu H2D while we can complete a project like this using the older Snapmaker machines.

One of the issues for the students to overcome is that they have already started designing these cutters but having only one edge to them and not thinking about the entire design.

We are going to allow the students to access some Playdoh with the intention of allowing the first designs to be physically printed.  This should allow the students the ability to look at the designs that they have made and consider what they might be like when applied in a cookie situation.   Some of the designs at present have a range of shapes that are separated by a solid line, which will in some cases not leave a shape but instead a series of seperate objects.

Level of Difficulty: Low-Medium.   We have used this as a basic level entry task in the past, while we are finishing off this year we would like the students to design and create using their iPads something that they could use and could be practical for the end of the year.  There are a variety of designs but the brief has been deliberately left open to the students interpretation.

Size: In the physical print shown top left the student has designed the cutter to be too small.  It is 50mm across and 60mm high in total, including the star.  Some of the subsequent designs are clearly bigger - however the student response to this was quite clever as this design fit the criteria for our recent Christmas Cracker Challenge - so it was transferred to this!

Cost: The sample is costing $0.20.   This is low for a general print however this is one of the benefits of this project.  Students need to also consider when using the cutter how much force can be used.

Timeframe: The example shown at the top of this post took fifteen minutes to complete on the Snapmaker, had the Bambu H2D been used then this would have been expected to be half of the time.

What we would do differently/next steps for the students: This print has a long way to produce a finished product.   The testing phase of the prototypes which the students are now moving onto as usual will be crucial to the students overall success with the project.   The designs should also move on from the basic tree design that is currently being focussed on.

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