Wednesday, September 20, 2017

3D Printed Student Lip Balm Holders

Above: Rounded Lip Balm Design.
Challenge: For students to produce an original working container that was suitable for holding liquid or lip balm.  Created by Y4/5 students in New Zealand who were nine and ten years old.
Background: Next term our cluster of four schools have a showcase where the students have worked this term on a significant project.  The class next door are making authentic products to showcase and as a result the students used Tinkercad to create a container for their product.
Above: Outside 'rafting' clearly visible
Level of Difficulty: Medium - both these designs needed significant adjustments which the students will repeat.   Both included text and design that were printed on the outside of the 3D Print, which contrasted with designs that have the lettering inserted into the base of the design.  These desings in addition were round in shape instead of being square.  When 'rafting' was removed the lettering itself would be removed from the shape, negating its effect.
Timeframe: For producing something such as this with an 8mm nozzle (various designs are shown all with slightly different timeframe) you are looking at a six to eight hour print time.  The prints are essentially variations of the same theme which is why I have group them all together in a similar post.  As a consequence these prints for various reason will be reprinted shortly.
Note lettering starting to be missing detail
Size: As above and shown in photograph.  The lids are in the 4cm to 6cm range, the base have a range from 6cm-10cm with a height in the range of 10cm to 20cm.
What we would do differently: The lettering will be redesigned to reflect the size of the prints - and an attempt to shift the lettering from featuring on the outside of the print to the inside.   This is illustrated in the print to the left which the lettering is starting to show signs of missing parts of the font.  We used an 8mm nozzle for this print, on reflection we could have shifted to a 4mm nozzle and this would have allowed more detail into the print - however the problem would have been that this would have doubled the print time and there are a number of prints in this run for the class of students that need to be completed, and this afterall is a prototype to test the production skills of the student and allow them a first attempt at 3D Printing.

Sunday, September 17, 2017

3D Printed Student Lip Balm Holder

Heart Shaped Box viewd from above.
Challenge: For student to produce a functional lip balm holder, with a working lid.  The students who created this project were nine years old (working at Y4/5 level in New Zealand)
Background: This is the second featured print from the series previously described here.  The idea was for the student to produce a product that could be marketed to the general public and this is a test pot, featuring the lip balm with the logo of the business allowing people to sample the produce.
Lid wtih rafting present.
Level of Difficulty: Medium - although the print is not significant in size the design featured a working lid that was required to be printed seperately and work together in conjunction with the base.  This required a drop down lid with an insert/lip that would allow it to sit ontop of the base.  The print was successfully completed with the base the first time.  The lid when the 'rafting' was removed (by the teacher with pliers) an adjustment needed to be made with the insert as it required a further layer of removal, this was completed by the parent of the student who designed it, in his workshop at home.  (Had this not been possible we would have simply reprinted the lid with an decreased 'lip' insert which would have been in the one and a half hour to two hour timeframe).
Timeframe: Eight hours - 8mm nozzle size, with standard PLA.   The process was completed by a Tinkercad design followed by a conversion to Cura (the new updated version) and then printed.
Completed print with lid
Size: Both designs were printed 1cm high, a height of 9cm and 6cm across.  The idea was that they would sit in the hand of the person holding them.
What we would do differently: The students have produced something that has solved the brief in a really positive experience for the students.  They were able to design and create an original Tinkercad project which then translated extremely well into a 3D Print.  It was the students first experience with 3D Printing and has allowed an original eye catching prop to be completed for their presentation.

Saturday, September 16, 2017

3D Printed Student Business Project Containers

Container and lid before rafting removed
Challenge: For student to create and print a unique personalised container that was suitable for the holding or storage of liquid (conditioner).
Background:   All of our students have a significant showcase coming up.  As part of this the students in the classroom next door are producing a range of products that are unique which they create which they would like to brand.  3D Printing allows them to engineer and design their own products (using Tinkercad) and then create them.  The students in this case are nine and ten year old students.
Two lids, reprint on the right
Level of Difficulty: Medium.  The students were designing for the first time and were able to have students assist the process who had 3D Printing experience.   There had to be a re-print of the lid as, as the drop down aspect of the first print did not work.  It did fit however the fit was extremely tight and wouldn't have been easily removed.  The student was made aware of this issue and created a second lid, which was a seperate print, the internal aspect of which fitted much better for the purpose of the print.  
Timefame: Ten hours for both the base and the lid in this case.  The second reprint of the lid, when it was just produced on its own took two hours.
Size: Ten centimetres for the height of the container, 6cm across.
What we would do differently: Very little.  The students concerned meet the brief that they had created and were excited with the results.   It was a successful print, allowed for a degree of individualism and created a unique print for the student.  The student had not had significant previous experience using Tinkercad but was able to confidently produce the print.  (The teacher had to remove the rafting using pliers on this occassion).

Thursday, September 14, 2017

3D Printed DIsplay Prop

Challenge: To create or produce a prop for a school display.
Background: Our students have a significant Science presentation coming up, where the local community is expected to attend.  As part of the presentation we are looking at incidents of using the 3D Printer to show off our students creativity.  Given this brief,  for this first time ever in the history of this site we printed a pre-created model that had little or no input from our students.
Level of Difficulty: Nil - this was a pre-created model that was sourced from Tinkercad.  The students only challenge was to re-size the model as the initial model was too small to be effective.
Timeframe: Ten hours - 8mm.
Size: 10cm in length and 6cm wide, with a depth that varies from 5cm to 7cm.
What we would do differently: As the classroom teacher I really struggled with the concept of this, and the balance between producing something for a display and creating something original.   In the end despite the students selecting the image to print by using another persons design it has significnatly reduced the creativity involved.  The students themselves would have struggled to produce this themselves

3D Printed Animal Bait Station: Take Three

Redesign with focus on extending legs
Challenge: To build a bait station that allows the recording of nocturnal animals at our School that is able to resist being tipped over by a hedgehog.
Hedgehog at School tipping bait station
Background: As detailed in the three previous posts the students have been creating 'bait stations' at allow nocturnal animals at school being photographed by a trail camera.  The students have identified that Hedgehogs (which are considered a pest here in New Zealand) are a significant factor at our school.  We have recorded evidence of the hedgehogs tiping over our bait stations by standing up and pushing them over, allowing them to access the bait.  In the last two revisions of the print the student was targetting the legs of the print, as larger legs are intended to provide stability to prevent the hedgehog from being able to tip the bait station over.
Bait station in foreground in place
Level of Difficulty: Low - this version of the print has replaced a 'spike' version of the legs with a cyclinder shape.  Despite numerous attempts at printing those they had not proven successful (see previous prints0 so the student opted for this design with the intent to bury them in the ground.
Timeframe; Ten hours - the modification with the legs did not significantly alter the print time for this project.
Size: The intention with the 'spike' version of this project has not added to the size of the legs, the design of them has shifted to a cylinder shape as can be clearly seen in the photographs.
What we would do differently: This variation of the print solved the issue as by burying the bait station in the ground it was possible to ensure that the Hedgehog was not able to tip the station and remove the bait.  This was a positive creative use for the 3D Printers to resolve an issue.

Monday, September 11, 2017

3D Printed Animal Bait Station: Take Two

Take Two prior to rafting removal
Challenge: To build a bait station to allow the recording of nocturnal animals.
Background: In monitoring the number of nocturnal animals at Auroa Primary School the students from class have identified Cats and Hedgehogs as two animals requiring monitoring.  As part of this the challenge has been to 3D Print bait stations (with peanut butter for the Hedgehogs and Cat busicuits for the Cats).  Both animals have shown the ability to tip over the exisitng bait stations (as illustrated in the photographs).   Students have produced bait stations but not currently one that has shown the ability to resist being tipped by a Hedgehog or Cat.
The spikes, once rafting is removed
Level of Difficulty:  Low.  This is a modification of a previous print that has not worked and students are trying to improve the ability of the bait station to avoid being tipped by the animal.
Timeframe: Ten hours with a 8mm nozzle print.
Size: 10cm across, with an 8cm cylnder and then spikes (see picture) designed to a depth of 8cm to provide more stability than the original print.
What we would do differently: The spikes, which were intended to provide additional stability, failed.  The 'spike design' was not able to be printed correctly, despite several attempts with this version of the bait station.  The student has opted to attempt to print a cylinder version of the spikes, and then to bury the entire base of the design in the ground.  The idea is that this should provide enough support to prevent the animals from tipping the bait station, allowing them to be successfully photographed.
 Left: A cat shown tiping the original designed 3D Printed bait station.
Right: A hedgehog tipping the bait station at three o'clock in the morning.

Wednesday, September 6, 2017

3D Printed Animal Bait Station

Challenge: For students to create a unique 3D printed bait station.
Bait station as viewed from below
Background: Students are looking to use a tracking camera to record the amount of animals that are located in the school.   As part of the process a bait station was required.   There are feral cats located in the area, and they were able to wreck the existing bait station.   Students working in a group created an original Tinkercad design with the intention of attratcting cats without the cat being able to easily access the bait - allowing the cat to be photographed for recording purposes.
Level of Difficulty: Medium, the design was created from scratch and the students involved had previously been creating other designs in the series.  This finished version was the first version of the print.  The students had access to other students in the classroom who have used the printers.
Timeframe: Eight hours on a 8mm nozzle print.  The design needed to incorperate several features, a cylinder design to house the bait (in this case, cat bisuits) and a platform with the ability to allow it to be placed in the ground.
Size: 10cm across, 6cm high, 5mm across - platform.  The cylinder for the bait was 4cm across and 7cm in height.  These sizes were worked out on the basis of the problem that the students were looking to solve.
What we would do differently: The design currently relies on the weather remaining dry as there is no lid.   This is a consideration for an improvement if the weather proves to be wet in the future.

The feral cat activity would indicate that the cats are quite vigourous in attempting to access the catfood.  There is a significant question about its durability under pressure.  Given all the circumstances the students have completed a challenge with a innovative and creative design that specifically addresses an issue that needed to be solved.

Left: Actual footage from the first attempt at using the Trail Camera to identify and record feral cats in the school.   The yellow box that is in front of the cat has been dragged from the position that it was placed in.