Background: In the previous print on this blog we detailed the identification of a problem and how the students had been brainstorming ideas and solutions based around using Tinkercad to create parts to obstruct or cover the entrance to prevent birds from using it as a nesting site (and then fouling the area including the deck directly below it as shown in the picture).
The first range of designs that the students focussed on was the set of three prints, the arrow wedge and the two rectangular prisms. The prints measured Currently these early examples are 45mm by 20mm by 20mm and the wedge is 40mm long and 40mm high. As with the other designs the width is 20mm. As shown bottom left.
When applied to the location the students considered the angles, the coverage and how the different designs would work in conjunction with the target location. It was obvious from this that a second larger print would be required
Two of the larger arrow wedges were printed, as shown left. This item is being used by the students to determine the angles that are required from the different locations along the deck. The students also realised very quickly that the two shapes when pushed together lock together forming a block, this then led the students to a discussion about a 'shape game' where you take the pieces and put them together and make different shapes.
The second print to target this area was 90mm long, 90mm wide and 20mm high. This was then applied
to the location, after printing for 36 minutes on the Bambu H2D. The print was then applied to the location and the right angle that was created fitted snugly, however the second part of the wedge created a small square in the corner. The students discussed this and decided that they would complete the print again focussing on reducing the space again.
This appears to have been a Tamgram Puzzle - something that we have looking into before but may now attempt to print.
The final part of the task was to complete the adjusted arrowhead shape from the left. This had the extended section which was then put in place over the potential bird entrance.
The final version of the print was then put into place and checked for its suitability. While it did not fit perfectly it was extremely
As we have noted we are confident based on the prints that we have featured on this site that the print will remain in place and complete the expected goal.
close and when being secured in place (by a bonding agent) we feel confident that the issue will be addressed. The final stage is that painting of the roof area and the new adjustments (the 3D Printed insert detailed in this print) will then be printed.
Level of Difficulty: Low - this has been a very basic task that is focussed on using a simple shape to solve a basic practical problem.
Size: The basic wedge that we are describing as an arrow head is 40mm by 40mm and is 20mm thick. The larger second version is 80mm by 80mm this is the wedge that we are going to use to identify the right angles to complete the rest of the prints required. We will adjust from here.
Cost: This is a small scale print that would come in at under $0.50c NZD. This will be adjusted depending on the angle and the size of the hole that the students need to cover.
Timeframe: For the smaller main print 35 minutes for the larger guide print the time was sixty minutes. This was completed on the Bambu H2D - this is half of the time that would be expected from the Snapmaker printer.
What we would do differently/Next step for the students: This has been a short term basic print task that has a practical application that the students could use the technology to solve an ongoing issue,. The challenge will be working on applying this design and idea to a variety of locations that are all unique as a result the way that the deck has been built. However at the end of the project we believe that the students will have used Tinkercad, their iPads and the Bambu H2D prints to solve a real engineering problem.
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