Wednesday, July 18, 2018

3D Print - Novelty Desk Organiser

Above: Design shown in profile.
Challenge: Student wanted to create a gift to give another person.   They wanted something themed that was related to a specific interest that the person receiving the gift.
Background: Student wanted to use a precreated design to print, using this as a gift for another family member.  The student concerned was a senior at our school.   This was her first time independently working on a 3D Project.   The student approached the teacher with the completed project and wanted to print it.   It was obviously sourced from a free design site (in this case Tinkercad) and the student simply wanted to create a print that would sit at a desk.   The head of 'Groot' from the 'Guardians of the Galaxy' movies/cartoons.  Under these circumstances the option is usually made not to proceed with this print, as the student had not personalised or adapted a print in a way to make it unique.  Consideration is also given for the encouragement of students to do this, we at times allow a print that is potentially going to get students creating and thinking critically about producing individual works.

View from above showing storage.
Level of Difficulty: Low - the student sole aspect of the print was to produce it at a size that made it suitable for her to forfill its purpose, to be placed on a desk to allow the hollow part of the head to be used to store stationary items.
Timeframe: Four hours.   The print had a minimal level of rafting, but as it was a commercial design there was not much leeway to reduce the time without having to resize the print. 
Size: Print had a length of 70mm a width of 60mm and a height of 80mm.    Given the purpose, the size of the print was about the right size.   With hindsight it could have potentially been significantly increased so it could have been a storage item for pens/pencils, as it was at its present size it was suitable for smaller items.
What we would do differently: The student was happy with the project.   She had a particular character from the series in mind and therefore her creation of this character would not be possible from scratch.   There was of course a potential for the student to personalise it more with the individuals name that it was gifted for, however that was not something that the student felt that she wanted to attempt.
Next steps for students: For the student to use the experience to start to create orginal designs.

Monday, July 9, 2018

3D Printed Toy Accessories

Above: Test print showing show jumping obstacle
Challenge: Student wanted to create a series of 3D Printed accessories to use as part of a play set involving horses and show jumping.
Background: This student has themed various designs during the year based around a 'horse' theme, as it is something that she is passionatae about.   She was looking to create specific accessories for some of her existing toys, hence she was trying to produce something of a very specific size to scale.   She was able to source some online freely available materials and designs and then set about adjusting the size of them so that she was able to have them produced for the correct size (which she was able to do on the second attempt).   As the time was relatively short we had contemplated a series of prints in different PLA that would feature the same design and then be combined for a layering effect with differing colours.  The student in charge of this project (and to also answer a question that has come up recently, the student is also responsible for the conversion of the design into the 3D Printing Computer software and the full printing processs - the limit of the teachers input at this stage is to check the production time for the print, sometimes once it is already in progress to simply ensure it is a reasonable print from the student.  The student in this case is a Y5 student who is usnig the 3D Printer for the first time significantly. 
Level of Difficulty - Low: this print require a redesign for size, otherwise the design aspect was minimal as it was a Tinkercad freely available file.
Timeframe: One hour forty minutes.   This could be modified for the individual poles etc which were ten minutes each. 
Size: The size of each of the items that were part of the set varied significantly.  The poles that were featured for the dressage jump was 3mm thick and 60mm long.
What we would do differently: Minimal - the student considered the project to be extremely successful, and other than the relative failure of the first print, given that it was not to the students satisfaction relative to the size of the original toy. 
Next steps for the student: To move onto other projects, perhaps to use their talents and skills to create original pieces of accessories instead of relying on open sourced projects.

Sunday, July 1, 2018

3D Print Key Wall Holder

Challenge: To produce a working model of a wall mounted individualised key ring holder to hold specific keys.
Background: Versions of this task were already attempted this year in a differing format, where the focus was on the holding of single key that was high use for students, and needed to be identified.  This variation came from the student responsible for the Oversized Tractor Keyring detailed on this blog.  He wanted to use the base to modify it to allow the hanging of a series of keys.   The design itself had its initial development as a key ring, and then when he was introduced to the challenge of mounting it solved this problem by producing screw holes, visible on the left and right of the top of the design.   The pegs that were introduced were intended as the way for the business, featured on the design, to hang a selection of keys.   A redesign is in process as the pegs have been road tested and found to be not as robust as intended.   The other issue that is relevant to the design is the student assumed that a selection of keys would all fit in the spaces provided, the student hadn't considered that the keys themselves would be on key rings that would affect the size.  The student who oversaw this project is a nine year old Y5 student who is completing his first series of prints.
Level of Difficulty: Low - this is progression on the basic design, that the oversized key ring came from so this is essentially a modified version of this, rather than a complete redesign from scratch.
Timeframe: Five hours.  There was a little room for some adjustments but not significant.
Size: This is essentially the same as the badge.  100mm by 90mm with a depth of 8mm.
What we would do differently: The pins for the keys need to be more robust, while still achieving their purpose.   The possibility of the reduction or the repositioning of the pins also needs to be considered, in the initial design the student just randomly placed them on the backing board.
Next steps for students: As above - the project is near completion but needs some additional to details.

Tuesday, June 26, 2018

3D Printed Key Ring

Challenge: To introduce new students to basic 3D Printing and design we wanted to introduce some new students (aged ten and eleven years old) to 3D Printing.  To do so we were looking to identify a short term project complete that would engage the students.   We went for designing a working key ring, variations of which we'd attempted before.
Background: We have attempted this before in the past but wanted to look at it again to complete it in a short turn around.   The idea was originally for a keyring however it is noted at our school that junior students have ID tags for equipment etc and this would also sort it as a possible use for this item.   The 'Oliva' tag shown in red in the photograph was designed by a student

who was eight years old, and featured a triangle deisgn next to the name.  Both of these are available on the basic Tinkercad interfact and can be accessed and used within and extremely short time frame.   The second basic example that is shown, the yellow print with the name 'Lexi' also included a basic dog shape, was designed and created by a ten year old student.
Level of Difficulty: Low - the students are using the basic interface as an introduction.   The tags shown are basic designs from the interface that students who are as young as seven or eight can complete easily.  With assistance it could be completed conceivably by younger students.
Timeframe: One hour - the design was created with this in purpose.  We were looking at ways to produce something that would have a purpose in a short space of time.  There would be the opportunity to alter this by reducing the size of the base, which has been printed with a 20mm width.
Size: We were using the same basic starter block for this print - a 70mm by 20mm with a width of 20mm.   This proved to be satisfcatory for this print, and this could be modified to mass produce them, we also looked at only just modifying the keyring by changing PLA over and could have looked at producing a series of component parts to produce multiple colours. 
What we would do differently: Nothing from the design for this print, we have attempted to complete the project and done so succesfully.
Next Steps for Students: Having completed this project the students concerned are using it as an introduction to moving onto more challenging projects.

Monday, June 4, 2018

3D Printed Game Soccer Goal Post

Challenge: Student was interested in producing a game of table soccer.  As part of the game he wanted to have a clearly defined goal post for the game.  He had tried cardboard versions of the goal posts but wanted something that would be more robust and permanent.
Background: Student was looking at ways to produce goal posts for the game mentioned.  There were various designs that the student looked at creating, including attempting to replicate existing versions of this print.  The student had attempted to design this from scratch but was not satisified with their results, relative to other versions that were available.   It is also worth mentioning that the student concerned is nine years old and this was his first attempt at 3D Printing - he has seen other projects that students have worked on but is developing his confidence with 3D Printing.
Level of Difficulty: Low - this is intended as an ongoing project which the student will produce a series of prints associated with the game.  The print is straightforward, the engagement with the student is as important as the process.   Creating the goal-posts as the student has done will drive the game itself foward as the rest of the details will follow the size of the goal.
Timeframe: Five hours - there were versions of the print that included netting etc but the decision was made to focus on the poles and to keep the design basic.
Size: The width of the deisgn was 110mm.   The back of the design was 120mm long.  The height was 100mm.   The various poles that make up the goal posts were 10mm thick.   We are intending to test the strength of the goal posts relative for the game and would be looking at redesigning these if prove to be not strong enough. 
What we would do differently: We would look at road testing this design to ensure that it would work.  The print was produced as a single file - there was considerable discussion about the printing of the individual goal posts and then super-gluing all the pieces together post printing.   We decided not to do this as the student wanted to be successful with their print run.
Next Steps for Students: As mentioned this is looking as developing a game as part of wider project.

Saturday, June 2, 2018

Summary of Classroom Projects

This slideshow is a summary of projects that are School/Classroom related. They include a brief description and a link to the original post on this site.

3D Printed Shower Caddy Replacement

Challenge: Student wanted to manufacture a replacement piece of a shower caddy/shower storage shelf for his shower at home.  Original piece was broken through use and he wanted to create a replacement.
Background: Student is a senior student (twelve years old) who has worked through our school system.  He has used the 3D Printers and our Laser Cutters for a considerable length of time.  This student has worked on a number of major projects of increasingly difficulty and shown flair and design with his creations.  This replacement part was designed and 3D Printed so it could be replicated exactly to replace the broken part.  It needed to work as part of a larger piece and needed to fit in perfectly with an existing piece.   The 3D Printer was utilized in this example because the part would be exposed to water on a daily basis.    This is the students first attempt at completing the part and the measurements etc were completed independently and designed in Tinkercad. 
Level of Difficulty: High - for a school student context this is about as complicated project that we have seen in the last four years from our students.   Every aspect of this print needs to be correct for it to work in unison with an existing part.   Each of the slots fits into an existing part. 
Timeframe: Nine hours.  The base of the shelf in this design is extremely thin, with a width of 2mm.The intention is for a potential reprint once the print itself once the print is proven to be successful, with that in mind a considerable increase in the print time would be expected by the nature of the base being the most significant feature of the print itself.
Size:   The dimensions of this print is slightly deceptive.   The base measure 140mm across by 120mm the wings at the back of the design are 40mm hight.  As noted in previous description the width of the design is only 2mm thick in places, something to be considered if the project is to be redesigned. 
What we would do differently: This project was created and designed exclusivley without input from the teacher.   The project was to solve an issue at home, where the student had independently identified that a 3D Printer would be the best tool to solve this problem and replace a part that needed to be.   Other than the width of the thickness of the shelf, it is, in our opinion an example of an extremely high calibre.
Next Step for students: With the print complete the student is currently checking its suitability, the only issue of note is ensuring that the slots are accurately aligned with the shower piece and that the width of the shelf is adjusted to take the weight on shower items.