3D Printed Junior Challenge: AR/VR Movement

 

This is the companion post to the challenge involving movement from the end of last week, the first physical examples of which are posted on this blog here.

As we have stated a number of times on this blog we are essentially trying to run the entire output of our classroom this year off a single printer.   This produces a challenge for the teacher that the students cannot all physically have their prints produced at one go, and also need to test the viability of their prints and designs.   The way that we do this varies but chiefly we use the AR/VR Tinkercad App feature to project, rotate and size the designs.   When doing so it tends to be very obvious if there are any flaws in the students designs and they can also have fun with how they approach their prints thinking about innovative ways to display them or have them interacting with the environment.

In the example top left a attempt to produce a small dog toy has been oversized and placed on the ramp outside of the classroom.   In the second example shown left a design was placed under a running tap to create an illusion suggested by the running water.

In both instances the students came up with the concept and ideas independently (they are eight and nine year olds) and then projected the image in place with their iPads and used the Tinkercad app to do so.

There are a range of pictures that have been produced with this activity - we are going to take a wide selection of them and put them on the Facebook page that is associated with this blog.  You can locate that by clicking on the link here.

3D Printed Junior Challenge: Movement

Challenge: Students had to design a print that was practical (had a size limit of 100mm) and for success criteria had to have movement.
 

Background: This was given as a an open challenge to the students.  We used several examples of interlocking designs that are available online and gave the key criteria that the students designs had to have a moveable part.   The cogs that are shown in the design were sourced from the Tinkercad main interface.  When your students are on the design page there is a drop down search category of a range of items in the shapes library.   There is a range of items that you can bring instantly into your students design -  that are classed as 'hardware'.'   In this instance we wanted to allow the students to focus on the engineering challenge rather than the design.

If we had more time available potentially we could have had the students use a range of tools to develop these shapes as well as the backing and the other details, however our afternoon block where we allocate time in the classroom tends to be forty minutes or so, so our time is limited and this was produced as a prototype on the first attempt.

We found various online fidgets and wanted to look at ways to recreate this.   The print that was undertaken by the student was a first attempt - we felt that there was a large number of factors that needed to be addressed but the best way to do this was a physical version of the print.

Resources used to complete this print: iPad, Tinkercad App, Tinkercad Interface Design: hardware 'cog', Bambu H2D, Silver PLA.

Level of Difficulty: Low - the challenge in this task is based on the engineering of the task.  The design and creation is going to be for the housing for the shape itself and it is anticipated that the student might adapt this design when moving forward.

Size: The print measures at present measures 95mm across at the front and is 105mm high.   The width of the print is currently 10mm.   At present the design features the three cogs however this is going to be adapted depending on the motion that can be achieved with it.

Cost/Price: The print as it stands (shown left in the photograph) uses 15g of PLA to complete the project.  This has a price point of $0.30c.

Timeframe: To complete the print the project took a total time of 45minutes.  There was no rafting or support required for this print.   It was printed as shown.

What we would do differently/Next steps for the students: This print will require refining - the cogs at the moment in the design are somewhat loose.  They require some additional support or design to hold them in place or allow them to move with motion to complete the success criteria that was assigned to the students.

The student has also considered that it might be extremely effective to complete this print using different coloured PLA as that would have a striking overall affect with the design.