Day 109- Printing a Pokeball

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Math 11 – Here I’m trying to print a Pokeball that one of my Math 11 students modeled.  The first couple of tries at printing didn’t work too. I’m using Cura, and I found on Reddit that Cura allows the user to view the layers as they will print. Using this function and by modifying the support parameters, I was able to anticipate what changes I should make to get the sphere to print.  The supports aren’t needed for overhang, it’s needed to get enough material touching the buildplate so the part doesn’t slip while printing.  It worked.

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103 – Printing 3D Scaled Models

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Math 11 – I’m slowly chipping away at printing models that the kids designed.  This student was pretty excited to try and print his Acropolis.  It worked out pretty good!  The idea with this project was to have students use 3D design software to practice visualizing and exploring 3d shapes. As well, I added small component of calculating scale to the assignment.

Day 80 – Many Solutions

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Engineering Physics – I don’t want to flog a dead horse with the 3D printing, but it is what we’ve been working with… Here is a collection of the different laser holder designs that the students made.

There are fairly large flaws in all of them, mostly because I didn’t give them all the info they needed to design a fully functioning holder.  In general they made a housing for the laser, but there is nothing in the design of the housings that makes them, in turn, good for holding!  And to be honest, I didn’t really want to go down that road. I just wanted them to have some experience with mechanical design and modeling, which worked out. If this course runs again next year, I have many ideas on how to improve this project and have it work more seamlessly with the cart launcher that preceded it. More to come!

Day 74 – First 3D Prints

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Engineering Physics – The first couple of groups starting printing their designs today. We are all learning with this process together. I wasn’t sure what kind of resolution we would get with the printers and it looks like many of the students are designing features that are less than 1mm in size. I know the resolution of the printers is better than 1mm but I don’t think it is good enough to print extrusions that are 1mm in size. It’s close though. This should lead to some good lessons on tolerances and limits of fabrication.

Day 71.5 – 3D Printers are Ready

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Engineering – I came in over the holidays to finish fixing and setting up my room’s 2 Printrbot Simple 3D printers.

They say it’s important to step away from teaching while on holidays in order to not burn out. I’ve been looking forward to this though, I’m interested in the technology and wanted the time to focus on getting them going.

I haven’t printed much yet. I had to swap out a z-axis, replace and cooling fan and then calibrate the z-axis sensor. I then printed a spacer part that the spools of PLA will sit on. So far things are going ok. Perhaps I will come in again to test print a model of a Greenland paddle, as part of a project I’m designing for Math 8.

Day 57 – Working on the 3D Printer

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Math 8 – I kept working in the Printrbot Simple 3D printers today. It’s been hard finding the time to get them working. I had to replace one y-axis that was bent. Once I had done this, I realized that the extruder fan on the other printer had also been broken. It is difficult to find time to work on them, with all of the other tasks I have to do.

In the meantime, I have modeled a Greenland paddle in Onshape. The model has 4 variables that the students will have to measure and scale, in order to have a scaled model of a paddle. From there, the students will print out their paddle.

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