Friday, April 14, 2017

First 3D Prints of 2017: Name Plates #2

Design Two - shown to scale.
Challenge: For students to create an original 3D Print design (the students first 3D Print).
Background: This has been detailed in a previous post but with the New Zealand School year running from February to December this is the first project of new school year for a new group of students, their first 3D printing projects in the classroom.  One student designed the name plate featured on the 29th March print.   These two students were inspired by that to produce their own versions for thier first 3D Print.  
Task: Produce an original 3D print, with design from scratch having some purpose/use.
Above: Design One: - name plate.
Level of Difficulty: Low - this was the students first project and print and as a result the print was created using some of the default/basic settings on Tinkercad.   The students were able to produce something like this within a ten minute time frame.
Issues: None - both prints worked from the plan without any issues.
Size: Both prints were similar with their dimensions - 'Mum and Dad' was 80mm by 50mm with a depth of 20mm.   'Connor' had a length of 100mm by 50mm with a depth of 20mm.  On reflection both prints could have been a depth of 10mm and this would have had a considerable impact on the print time (see below). Timeframe: Design one 'Connor' eight hours and design two 'Mum and Dad' was a six hour print.
Process: The students first original designs, with the idea that this will act as a springboard to more detailed projects.   It was an introduction to show the student what would be possible.

Monday, April 3, 2017

3D Printing - 'join' challenge 2017

Above: the laser cut wood with holes
Challenge: Set by our school Principal the students were asked to create a 3D printed join to link together two pieces of wood manufactured by the schools laser cutter.  The task was relatively small in design and size however the design had to be specific to link the two pieces of laser cut wood at a right angle, and had to fit the specific hole detailed right.  This was also the second outright task this group of students had completed having the previous name plate.
Above: Original design on the right 
Background: For the school year (2017) the school has purchased a new laser cutter.  The idea is to integrate this machine with the schools 3D Printers to produce material and projects that use both.   Having just started the school year the tasks are relatively basic but reflect first use of the printer.   As a reminder the Ultimaker 2 printers at our school have been upgraded to Ultimaker2+ which is reflected in a faster than expected print time.
Task: Students were supplied with the wood, with the inserted holes cut into the wood.  This allowed students to determine the shape and design of the 'join'.  The first print on the right was created without an attempt to measure the join, therefore the students were estimating without measuring.  The second version was designed with measuring as part of the process, the students grasping the concept of measuring and then transferring the measurements to the Tinkercad program.
Above: joint featured in the 
Level of Difficulty: Low - it appeared straight forward, however this task was slighly more complex than it seemed as the 'join' did not fit and required additional work.  As well as this the base of the 3D print left some residual PLA while this was normally not an issue in this case it prevented the join from being able to fit into the hole for it.
Issues: As noted as the fit was extremely tight anything that would create additional material would hinder the fit.  The extra PLA at the base of the join caused it to require sandpaper to remove it.
Size: This varied depending on the print run.  The first was 2cm by 2cm (as shown).  The reprint was 1.5cm by 1.5cm and this completed the task as expected.
Timeframe: There were eight protoypes that were printed in one go - a combined time of 90 minutes.
Process: This was a challenge that was set by the Principal of our school as a follow up to the name plate challenge.  Students were supplied with the wood for the join which they would eventually use to measure an exact size.
What we would do differently: This was again a simple introductry task that relied on the students ability to create and problem solve a practical task, it reinforced the students to measure accurately and then translate this measuring to 3D Printing.

Wednesday, March 29, 2017

3D Printing: Name plates for 2017

Above: Completed name badge/sign
Challenge: A new school year has a new group of students who have not had previous had experience with the 3D printers.   The challenge is to get a new group of students excited and producing original material with unique designs and problem solving ideas.
Background: The school year in New Zealand runs from February to December, so the new class were wanting an opportunity to use the 3D printers.  Our school had made the decision to upgrade our printers to Ultimaker 2+.   Classroom time at this point was not allocated to 3D printing so we were looking for the students to be proactive in their own time.  Tinkercad accounts were outlined and the students were encouraged to create their own account and designs in their own time, with the intention being if the students created the work we would take the time to print the designs.
Above: 12cm long name plate
Task: Students in a Y5/6 class (nine and ten year olds) were explained the design process and shown how to create an account.  They were then tasked with creating an original design with purpose for printing.
Level of Difficulty: Low.  The first students were able to use Tinkercad to create a design of their choice with a purpose.
Issues: None - the design was the students first, designed overnight and worked perfectly the only minor issue was the hole designed for looping of cord etc.  This had to be fully worked with a screwdriver, which was a minor issue.
Size: 12cm long, 4.5cm high and a depth of 1cm.   Black filament was the default.  Conceivably the depth could have been halved as 5mm has been fine for similar projects in the past.
Timeframe: Three hours - this is reflective of a 'fast' print but our printers have been recently upgraded, as a result we are anticipating an improved time in the projects from this point forward.
Process: This was genuinely created by the students, with their first attempts at Tinkercad completed without any input from the teacher.  The student independently created the entire project and was able to bring a completed project to the classroom - and explain the justification behind the process and what he wanted to achieve as a result of the print.  This was intended to inspire the student and others in the classroom as what might be possible and would hopefully lead to more complex and detailed designs and creations.

Friday, January 6, 2017

3D Printing: Sky Tower Model

Model of Auckland Sky Tower
Challenge/Background: Our School was contacted by a member of the public who wanted to 3D Print a project for their child.  There was a delay in using the publicly available 3D Printers and as a favour they asked for our school to print the project and make it available.
Task: In this instance the design was completed externally and our role was simply to print the design, as it had been designed and completed externally.
Level of Difficulty: Minimum - as a print only.
Issues: None - although in the picture there is a small nick in the front right of the base, this was caused by removal from the print after printing.
Size: 25cm in height, 8cm in width, depth varies according to the design but up to 10cm at the base.
Timeframe: Nineteen hours.
Process: To increase the quality of the print Innofil 3D Print filament was used.  The was designed from an external source so the code was emailed to us.   As a result the design process differed from the regular designs on this site - as it had been created in AutoCad.
Reflection: This was an approach from an external source and it something that would probably not be repeated again, it was a favour to someone who asked rather than an original creation from the students at our school.

3D Printing Logo Designs

Above: Original design on left
Challenge: To re-create a design from a Google drawing created by another student as closely as possible to resemble the original design.
Background: A student at another New Zealand school had designed a logo for the 'International Friendship Day' project.   The school did not have resourcing for 3D Printing so we took the original student design and gave a brief to two of our students to create a 3D version of the design which we then subsequently printed and sent to the student who had designed the original.
Task: As the original design was created in Google Draw it was felt that this should translate well to Tinkercad and some of the shapes that were available from the main screen would be able to reproduce the original design.
Above: designer with design
Level of Difficulty: Easy students were able to reproduce it accurately within a ten minute timeframe as all of the featured shapes were directly created from the Tinkercad dashboard.  The only issue was that some of the shapes were not specific to the relative size in the original and perhaps they could have been more reflective of the original design.
Issues: None - an older filament was used and the machine is in need of a service, there has been a minor issue with some of the filament on the raised surfaces but this is minor and not related to the design of the print.
Size: 20cm by 15cm with a depth of 1cm.
Timeframe: Eighteen hours.
Process: The original in this case was designed by a student in Google Draw.  The teacher was emailed the original design which was then copied and printed off so the students had the original to work with, as with most every other design on this site they used Tinkercad (beta) to complete the project which was then converted to Cura for Ultimaker 2 3D Printing.
Reflection: Students were able to mimic the design and it was a way to allow them to refine some of their skills.  Producing something for another school added to the novelty value of the project.