A teacher showed me a miniature computer that was made using a Kano board. It make blinking lights!
Also, they 3D printed out a housing assembly.
721K and 3D
13 Apr 2016 Leave a comment
in 3D Printing, 721K, Brooklyn Tags: 3D Print, 721K, soda
The 3D printing program at 721K creates objects and adaptiations to help the students drink cavity-causing soda, and then squeeze the tooth paste roll to brush their teeth after!
3D Gears Math
06 Aug 2015 Leave a comment
in 3D Printing, math Tags: gears
SO here is the information for making 3D gears that all fit together. I used Sketchup for the design. All the gear convexities and concavities are 3-inch half-circles.
6-Spoke Gear
12-sided circle
6-inch radius (12-inch diameter)
Rotated 7.5 degrees
12-Spoke Gear
24-sided circle
12-inch radius (24-inch diameter)
Rotated 15 degrees
24-Spoke Gear
48-sided circle
24-inch radius (48-inch diameter)
Rotated 3.75 degrees
Rectangular 14-Spoke Gear
12- by 24-inch rectangle
6-inch radius circles at ends
3D Gears
04 Aug 2015 Leave a comment
in 3D Printing, math Tags: gears, Sketchup, Spirograph
After having discussions with my math peeps, I decided to make gears. From scratch, in Sketchup. Many failures ensued. Thankfully, a Youtube video showed me the light (granted, I had to watch the video about 20 times).
Anyway, the gear ratio works (don’t ask me what that means), and different sizes of gears spin with each other. I even got fancy with irregular shapes (see the long gear) as well as gears with cut-outs (to save filament) and a gear with holes (to create abstract designs a la Spirograph).
Spinning Tree
04 Aug 2015 Leave a comment
in 3D Printing Tags: Makerbot, Sketchup, spinning, tree
This is a 3D printed tree that has movable branches. 
I made it in Sketchup of simple geometric shapes, each rectangle just a wee bit smaller than the lower one.
The top part of the tree was actually a bit of challenge to create, as I had to create the triangle shape, but then make a partial hole through one side of it. There are three versions of it in the illustration above.
I exported each piece separately into Makerbot and then printed them one at a time.
Here are some more views of the tree.
Here’s looking at you, camera
15 Jul 2015 Leave a comment
in 3D Printing Tags: camera
The problem with the Mac’s camera is that it only faces the person in front of the computer. This is unlike iPad/iPhone, which has lenses facing both ways. So I thought why not 3D print a widget with two mirrors attached, that sits atop the computer? The part would work like a periscope. This way, teachers could record students without students being distracted by seeing themselves on the computer monitor.
Here is a sketchup version of the design 
Neighborhood with 3D Prints
06 Jul 2015 Leave a comment
in 256Q, 3D Printing, project Tags: map, scale model, Yuka Dawson
Yuka Dawson of 256Q sent in these photos of a neighborhood her class made, complete with 3D-printed buildings and landmarks.
What I notice:
- different colored filament
- models are to scale (maybe)
- famous landmarks (statue of liberty, leaning tower of Pisa?, Grand Army Plaza?)
Hinges from start to finish
01 Jul 2015 Leave a comment
in 3D Printing Tags: ABS, infill, Makerbot, Sketchup
I designed hinges in Sketchup
and exported them to Makerbot
Here they are being printed (around 40% done)
Here it is about 60%
meh. The machine just overheated.
It is just as well, since the design was not correct. The hinges are just a bit too big to fit together.
Back to Sketchup….
Makerbot
01 Jul 2015 Leave a comment
in 3D Printing Tags: Makerbot, Ronco
Back at the District Office, I have been experimenting with a Makerbot Replicator 2X Dual Extrusion 3D Printer (whew, that’s a mouthful).
There is so much potential for 3D printing, yet there is still just a 66% success rate on our prints. Some prints stop sticking to the build plate, sometimes the extruder clogs up in the middle of a print, sometimes who-knows-what happens.
I wish it were as easy as a Ron Popeil’s rotisserie chicken cooker. You know, “JUST SET IT AND FORGET IT!”)
New series: 3D Printing
01 Jul 2015 Leave a comment
in 3D Printing
I am going to start a new series on the blog, on 3D printing. stay tuned.
Occasional Observations of Traveling Technology Coach 