3D Printed Pencil Toppers: Prototype

 

One of the best things about the students designs and creations and the 'making' process for the students is the ability to adapt and 'break' certain designs.   In a recent classroom challenge we asked students to create a 'pencil topper' that was an item that could sit on top of a students pencil so that the students could identify easily whose pencil each was using.

We also identified this as a suitable practical design task because its scale meant the classroom could have a print produced each in a relatively short space of time (the average time beforehand we were estimating to be in the region of thirty minutes for each print).

Students follow a familiar process of design, testing (using AR/VR and the virtual designs created in Tinkercad) measuring and checking.   Only then when this has been completed do the students mark their 

In the case of the print left, some of these criteria were not met, however the print had a certain charm to it so the teacher made the decision to print the design.   The design in essence is too big.   The design measures 100mm across by 45mm and is then 10mm wide.   Realistically the length makes it too unwieldy to balance on the top of a pencil.  Finally the insert for the pencil while it appears to be suitable is not - more accuracy is required at this location.   When the design was shared with the student in virtual form it appeared suitable - however when printed it out it was obvious that considerable adjustment was required.

The print as it stands used 30g of PLA to complete and this had a price point of $0.75c.   The print took one hour to complete.

The revision would require a reduction in size and adjustment of the insert location.   The student have also started a discussion about completely 'flipping' the design by making it a storage location by changing the entrance point and having the storage run landscape.

In the second example shown left this design is considerably smaller.   The student took advantage of the detail that is possible with the Bambu H2D and of note is the students name on the top of the design which is only 2mm high and 5mm across.

Again there are issues with the design that need to be address the clear issue is again the insert for a pencil - while it again appears to be suitable for a regular pencil when the actual print was applied to a pencil there was clear difficulty to match the two together.

The centre of the design is off with the circle insert.  The print used 10g of PLA filament to complete.   The print cost was determined to be $0.24.   The print took thirty two minutes to complete.

The entire class have used this two physical examples and applied the logic and design for the entire class to apply to their own designs.

As mentioned previously there are numerous other potential examples which you can view by searching for them using the 'Search this Blog' box.