Thursday, December 4, 2025

3D Printing Christmas Cracker Challenge Part Two

 

Challenge: To produce something unique with purpose that would be suitable (size wise) to include in a traditional 'Christmas Cracker'

Background: This design came in the first round of class designs that met the brief that was discussed.  The size of the earrings shown here is deceptive as they are amongst the smallest (and quickest) things that we have ever printed.   That we attempted to print these was very much reflective of the fact that we had the Bambu H2D to attempt to complete this with as the miniature detail is not something we would have attempted with a larger printer.

As per almost every design that is on this blog (unless otherwise stated) this was designed by a Y4 student, an eight year old, using their iPad and the Tinkercad App.   They used Tinkercad for the design and the creation, then used the AR/VR feature to project the creation in different locations prior to printing.  The student worked independently and there was no teacher input into the process.

The student designed one and then was able 

Level of Difficultly: Low - this was pretty much a 101 design task.   This student has been in the classroom for a short period of time but has picked up 3D design and creation easily.  This is a basic design that was completed in a single session.

Size: This as mentioned is one of the smallest prints that we have ever attempted.  The earrings are 40mm in length, 20mm wide and the tree base was 1mm wide, so including the baubles 2mm thick.

Cost: According to the Bamu Lab Printing software the total PLA used for the print was 2g and the cost of the print was $0.04 for the pair.

Timeframe: Twelve minutes, it waa s print that took more time to complete with the printer warming up than printing the project print, which is extremely unusual.   This is the minimum that you would realistically want to print.

What we would do differently/next steps for the student: This activity ticked all the boxes and the print process was completed - the size issue with this challenge was easily addressed.

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