Sunday, March 18, 2018

3D Printed Ultimate Desk Organiser Update

This is a updated version of a print already detailed here in several posts.

The initial design, in red, was for a student desk organiser which consisted of a named block, sunk into the back of the design and two hexagonal cyclinders which were the storage components.   The original design had a twelve hour print time, and was student created.

In the revised version, which was labelled the 'ultimate' desk organsier, a student took this initial student design and added additional features to the outside of the design to further personalise it. (emoji, a donut, face and a side bar to hold in place a protractor).  As a result of these further changes the print time was increased to a tweny hour print.

This revised version, shown left, focussed on reducing the width of the cyclinders where the stationary was stored.  In the original version these were 25mm thick.

This version reduced the width of the cyclinders to 5mm.  It also removed the emoji from the side.   The consequence of this was the revised printing time which is now reduced to twelve hours.

The design has also included a bar, which can be seen in the right had side of the design to allow a protractor or a small ruler to be held.

Saturday, March 17, 2018

3D Printed Short Term Emoji Badge

Above: Emoji design, yes it is.
Challenge: To demonstrate the 3D Printer with a quick personalized print, that could demonstrate the capability of the 3D Printer.  (Ahem).
Background: Most of the prints on this site have an extended print time due to the size, purpose and nature of them.  Occasionally the students want to demonstrate something the opposite of this, a short term print that can produce something quirky, or humours.  One example that students had come to me with was the emoji shown in the photograph.  The students were able to show that it would have a purpose, as a label and were able to personalize the design, and argue that they could use it as an exemplar, which would allow a quick print (in the twenty minute range for each emoji).   Its a bit of 'fun' if nothing else and was given consideration before the decision to print was made.   Apparently a student would use this to mark their bag or their possessions.
Level of Difficulty: Low - this is a generic design, which has been re sized for purpose and has the addition of the students name on the top, as a consequence the student who designed this was able to achieve all these things in an extremely short space of time.  A small design note - the rafting on the back of the design was deliberately not removed as it allowed the eyeballs to hold in place. 
Time frame: twenty minutes was enough to complete the print.  They are relatively small (see notes on dimensions).  We printed a group of six of these designs (each a copy with a variation of the students name) on a single print run which had a combined print time of four hours. 
Size: 60mm wide, a height of 60mm and 5mm thick.  The purpose of this design was to produce something that was recognizable, and could be massed produced quickly so while it could be re-sized it would somewhat defeat the intended purpose.
What we would do differently:  The students wanted something for a specific purpose and could have experienced with something slightly more appropriate, however students wanted something humorous, recognizable and small and like all the best prints they completed the process. 
Next steps for students: Something that was original and not a stock copy.

Thursday, March 15, 2018

3D Printed iPad Stand - Drone

Design shown from above featuring name plate
Challenge: For student to create a personalised stand to hold his iPhone.  Student who created this print is ten years old and has a shown a talent for 3D Printed design and creation.
Background: Student is able to produce a range of prints and designs and has been increasingly complex and innovative.  In this example he had a desire to create a stand for his iPhone so that he could locate it easily have it promently displayed in his room.
Level of Difficulty: Low-Medium.  The design itself is realatively straight forward.  He took an available template (the drone template) and decided to convert it to personalise it for his use.   He included a name, sunken into the top of the base, added additional backing plate and sunk a design to catch the iPhone. 
Design to hold the iPhone clearly shown by the depression
Time Frame: Twelve hours.   There was a change required to this print, which were the feet on the base of the design.  These were too thin and came away when the rafting at the base of the design was removed.   Taking these out of the design did not alter the design and therefore should have been removed from the plan.  This would have had a significant improvement in the printing time.   As previous prints, 20% infill (internal printing of the printer), Tinkercad used to create the design (including having a design featured from the main Tinkercad interface) followed by being converted to CURA for printing by the Ultimaker 2+. 
Size: The front of the design measures 160mm across and is 180mm long.   The base plate is 100mm by 100mm.   The block that supports the iPhone and has the name of the student on top is 65mm high, 25mm thick and 10mm long.   The depression to base the iPad is 85mm by 35mm and 10mm deep.  Relative to the size of the phone these dimensions would be the minimum that would be required for this particular print to be successful. 
What we would do differently: The issue that needs to be addressed is the legs.  This design needs to potentially be lifted up off the ground, from a display perspective and the student has twice attempted to use legs that have been too thin and removed either partially or fully when the rafting has been taken off.  The student is currently designing additional legs and a base for this design to compliment its creation.
Next Step for students: As above.   The design itself was created by a ten year old student so some conferencing has resulted in more discussion about its shape and production.  The student could have printed parts with seperate PLA filament and then assembled with superglue or other connectors to produce a layered affect with the colours. 

Wednesday, March 14, 2018

3D Printed Book Stand

 Currently a group of students are working on a series of print ideas based around making a bookstand.

The students have been experimenting with different designs and  shapes backed onto the bookends.

In these draft designs students were primarily determing the size and potential design of the bookends.

Some students were using third party created material (as shown in the photographs) to enhance thier design.

There were variations in the design of the lettering for the names.

These designs will expanded on in further posts including a detailed discussion of the projects and following through the production process.

Estimated print times for this will be six hours.

Students have used a variety of additions to the print.

Monday, March 12, 2018

3D Printed Kitchen Utility Holder

Design from the front
Challenge: For student to create, design and print an original utility holder for use in the kitchen.
Background: Once they've completed the basic designs in the classroom the students have been challenged to create original and unique projects that have a meaningful application and use.  This student in question was looking to design something original for various kitchen items.  Student (who is ten years old) is having their second year of classroom opportunity with the 3D Printers in the classroom.
Level of Difficulty: Medium - aspects of this print could have been modified, particularly with its purpose (see below) and there were aspects of this print that could have been altered so that it worked more successfully (particularly the base).
Time frame: Ten hours - aspects of the print could have been changed, however overall the design met the brief, dependant on the size of items that were to be stored in it.  This is an 8mm nozzle, on regular settings with a 20% infill (which are all the standard default settings).
Size: The dimensions of the front of the design is 90mm across by 80mm deep.  The back of the design is 100mm across and a further 150mm high.   The width of the design is 5mm except for the back, which creates a base by being 10mm thick.
Design shown in profile
What we would do differently:  The writing on the front of the design, which is illustrated in the photograph is supposed to read 'Kitchen Bits'.  However the lettering has been minimized in the print and as a consequence is difficult to read clearly.  It can be tidied up by the removal of the filament around the lettering, and in the lettering itself, such as the filament around the 'b'.   This removal typically results in the internal aspects of the printed font being removed as well as the intended filament.  We have experimented with different tools to minimise this accidental removal, typically without success.  The other major
change to be considered is the purpose of a container like this - while the intended purpose was for a kitchen utility holder, one thought was to have perhaps a classroom token box or a classroom container that would hold universal items (such as markers etc).   Depending on that purpose then a way to mount the container on the wall etc. should have been considered.  Furthermore as shown in the illustration the bottom part of the badge design where the angle touches the base is slightly below the base of the design.  This is why the student hasn't removed all of the filament as it would cause the design to be slightly unbalanced. 
Next step for student: To redesign the base to ensure that it wasn't sticking below the floor of the design.  The lettering itself could have been designed differently and made bigger to ensure that it was more detailed with the printing.

3D Printed Donut Utility Holder

Above: Design shown in profile
Challenge: To create a piece of utilitiy holder suitable for holding pens/pencils (but also have the potential as a general holder of items).  Student who created this is a Y5 student, nine years old in her first year of using 3D Printing.
Background: Student has shown some creation and invention with various projects related to 3D Printing in the classroom.  Student is designing a series of prints and creation and conferencing with the teacher with regards to their originality and purpose.   This design, while it would appear complicated comes primarly from the main Tinkercad Interface, which has a series of basic designs that students can take and reshape, redesign and ensure that they meet the criteria for the purpose set above in the challenge.
Level of Difficulty: Low - while the design is exactly what the student had in mind (see below) the essential issue here was the redesigning of the shape created by Tinkercad and ensuring that it was able to meet the purpose.  In this case the student needed to redesign the shape to meet the purpose of holding pencils and general items that the student wanted to store in it.    The size, relative to the design, was perfect for the design.
Above: Original design as shown as an .STL download file
Timeframe: Twelve hours - consideration could have been given for the infill used in this design, to reduce the density of the print to still complete the purpose.  Every design on this site, has always used the basic default settings for the infill, most printing software will allow you the opportunity to alter the level of filling it.   The default setting on the CURA software (which is the Ultimaker 2 in-house software) is at 20%.   It creates a series of connected lines in a crosshatch form which prove to be the strength of the object.  We have not experimented with reducing this infill, however the strength of the prints featured on this site have not been in question, as we have (after three years) yet to have significant damage to the produced items, which seem to be extremely durable and robust.
Size: The width of this desing was 100mm.   The height of the design was 100mm.   The width of the design was 25mm at the top. Conceivable the width of the design could have been reduced to reduce the length of printing time.
What we would do differently:   The student obviously missed an opportunity to personalise the container with their name or the purpose of the container (however the student was adamant that they wanted this container to be multi-purpose and not restricted to one purpose as it would have been if it was created with a label).
Next steps for students: To show other students (and teachers) how to produce material/projects of a similar nature.  This student has mastered this type of project and needs to extend herself in other ways.

Thursday, March 8, 2018

Ultimate 3D Printed Desk Organiser

Above: from side showing emoji
Challenge: For student to create a stationary holder to store their stationary.
Background: Inspired by other students in the classroom the student designed a container for all of her stationary.  This was the second recent print from the student who had recently designed a significant print to hold her iPad, as linked here.   For this design she was inspired by a previous student design in the classroom, linked here.   The student used this as a the base, and then added a series of additional features to the design - including a subtle face on one side, a donut at the front for effect, a side bar to hold the protractor of the student and a emoji, yes that is a 'poo' emoji on the front to one side.
Level of Diffculty: High.  This print featured a number of intricate details and features that were added to a basic design.  All of these needed to add and work to the design and did so.
Timeframe: Twenty hours - this was a significant print in both size, design and timeframe.   Some of the features could have been reduced or decreased and given the dimensions a consideration was given to reducing the infill for the back of the design.
Above: Design shown from above clearly showing the naming
Size:  The base of the design is a square shape that is a 120mm by 120mm square.  The height of the back of the print was raised 150mm from the base.   As noted in the previous print that this was used as base.  The first tower included in the printer was 65mm high.  The second tower was 100mm high.  The name block that was at the back was raised 135mm.  The purpose of this design was to hold a variety of stationary items.
Protractor holder and 'donut' design visible
What we would do differently: The width of the hexagonal design for the different levels of the container was 25mm thick in places.  This could have been reduced to 10-15mm and would have served the same purpose for the design and would have reduced the overall print time. This particular design has been described as the "ultimate" desk organiser in the sense that there is not additional features that could be added.  The only aspect that students have been attempting to solve is the issue of a headphone holder, by either introducing a bar or a holder.   There have been a number of attempts at modelling this however these have proven to be unsuccessful as the bar designs have caused all the models to tip or a high degree of likelyhood of tipping has taken place.
Next step for students:   This student could have designed the project from start, instead of using another design as a basis for design.  She could have reduced the width of stationary holders and reduced the level of infill.