Wednesday, August 31, 2016

3D Mathematical Printed Competition Entry 2

Print showing the rafting affect
How long did it take to print? four hours - the print was set on a fast print (see below).
Original design as created in Tinkercad
Problems Issues: Rafting of the print wasn't successful.  By making the print a 'fast print' setting the rafting attached to it, the removal of the rafting caused damage to the intended structure.   As a consequence the rafting needed to remain in places on the print, giving it the appearance of being 'rough'.  The student said that with hindsight they should have made the print on a detailed or higher print setting, this would have considerably increased the print time, however it would have greatly increased the strength of the print allowing the rafting to be removed.
What would you do differently? Obviously as a result of the print
and the strength of the print would be changed considerably.   The shape of the design would possibly need to have wider bars as part of it to strengthen it.  As a positive despite the issues with this print, the shape was maintained in the printing and the filament did set with the intended shape.

Tuesday, August 30, 2016

3D Designed Mathematical Objects:

Note: rafting yet to be removed from the plate
How long did it take to print?
This was designed and printed using the quality settings, instead of the regular fast print.  It was designed this way so the quality of the print would be a good as possible.   As a consequence of this the print time was fifty hours.  However the quality of the print reflected that.
Size: 25 centimetres across.  Depth of 10cm.
Problems or Issues?
None - the students deliberately increased the quality of the print, minimal rafting and clean up once completed was required.
What would you do differently?
Nothing the design worked as the student intended and the overall affect was pleasing (although student is aware that it resembles a lemon squeezer which was not intention!)
the student was inspired to see the base design online created by other work and this was the first part of the design.  Following that the inner lines and shapes were created.  The competition was for the students to design a Mathematical 3D shape and this achieved a merit award at the local competition.   The traditional entries from the other schools and students were objects that were designed and build using physical objects we were the only school that was 3D Printing ours. The student used Tinkercad and was as Y8 student (12 year old).

Tuesday, August 23, 2016

3D Printed Art for Mathematics Competition

This series of prints was completed for a specific competition.   The local students have a regional competition that they can enter into.   The competition is Mathematically based and as part of Methanex Mathematics promotion, details of which you can find by clicking on the link here.

Traditionally the students in the competition have created 3D models using materials such as sticks, straws, blue tack etc to produce a model that was three dimensional.

This year the students from our school used Tinkercad to create three dimensional designs, and then printed them using the Ultimaker2.  The concepts a relatively new one for the competition, having visited the displays in the past 3D Printed objects are not the norm, so it will be interesting to see how this will be reflected in the judging.  The students themselves will complete the printing details for each of the objects shortly and we will post the details online.

Saturday, August 20, 2016

Door Signs/Classroom Passes

Note: Attempt at having a join created by printing
Challenge: This project was teacher initiated.   The teacher was looking for a way to use the 3D Printer to create a sign for placement above the door of the classroom - as the finished product was approximately 30cm this was also the perfect size for a classroom pass.  Previously I have worked in schools where students had to have one of these when leaving the classroom to go to other locations.
Background: As detailed above.  The teacher was looking at a dovetail approach to join together two separate prints (see below) we are very fortunate with the Ultimaker 2 that we have a large base to print off.  The length of the combined print was thirty centimetres.
Whare Paku translates to 'Bathroom'
Task: The idea was to link two separate 3D prints together to form a solid print.
Level of Difficulty: Using Tinkercad the task was straightforward and followed the format of the previous prints.  The details were then pulled out of the base sign.    Overall: Low (however it is important to read the note below about the joining of the print).
The wood version of the sign milled from wood
Issues: The join failed.   The teacher had attempted to create a 'dovetail' join for the two separate prints.  The two interlocked however the teacher had to force the two together by standing on them, in doing so this produced the crack that is visible.   The print had been completed on a draft setting which possibly contributed to the failure of the join.   The idea being if they interlocked and were strong enough any bonding (such as glue) would not be necessary.
Size: 30cm long by 5cm high and depth of 4cm.  
Timeframe: Each of the two sections was twenty hours on fast print setting.
Process: Tinkercad for design converted to Cura 2, then downloaded on a memory card and direct print.  Following the failure of the join the teacher concerned used the School milling machine to wood cut the same design into a sign.  He used his original Tinkercad 3D Print and then altered the lettering to produce the print.