Easy to print Wobbler (Ring Roller).

The Ring Roller is derived from IFUJI's "The circle roller":
thingiverse.com/thing:72655

The goal of this redesign was to make it easy to print.

Video: youtu.be/XwoA5oQFQ60

After learning about Kagome lattices at the New Magnetic Field Frontiers workshop at Ecole Physique des Houches in Les Houches in the French alps, I thought that this shape would adapt well to being a coaster.

Just a interesting array for magnets. youtu.be/LyvfDzRLsiU

This is an lens holder for optical experiments.

This component is part of the Open-source Optics Library: Zhang C, Anzalone NC, Faria RP, Pearce JM (2013) Open-Source 3D-Printable Optics Equipment. PLoS ONE 8(3): e59840. plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0059840

By the Michigan Tech's Open Sustainability Technology Research Group. mse.mtu.edu/MOST

3D IEEE Logo, for the IEEE Integrated STEM Education Conference. Also serves as a handy reminder of the right-hand rule in physics!

This is a stand designed to hold 50mm diameter lenses for experiments with optics that I designed for my friend Hans who is a teacher. The stand can be clipped onto the edge of a meter stick so that measurements between lenses can easily be made while they stay aligned. The stands can double as feet to support the meter stick, or even holders of a light source such as a flashlight or laser. The design even accommodates all thicknesses in a standard pack of lenses such as this one sold on Amazon.com: amazon.com/gp/product/B00657LW8G?ie=UTF8&camp=213733&creative=393177&creativeASIN=B00657LW8G&linkCode=shr&tag=theplamik-20&qid=1360550742&sr=8-1&keywords=lens+set

An arrangement of atoms commonly found in crystals containing oxygen, transition metal elements, and rare earth elements. A crystal is made up of MANY repetitions of this basic cubic structure.

Each type of atom has a different size: Oxygen atoms are the smallest, the transition metals ("B site") are medium sized, and the rare earths ("A site") are the largest. Chemical bonds are represented by bars connecting the atoms.

Crystals with this structure are studied by many physicists and engineers, including yours truly, for their strange electronic properties.

This is for an ultrasonic transducer used in physics experiments. The bottom is designed to fit over a meter stick.

This is a wimshurst machine that you can print at almost no cost; home made bearings are used and I collected stuff laying around for other parts.

It is important to keep charge leaks at a minimum, so try to not have any straight metal edges where corona discharge can happen.

Also, depending on your leyden jars size, be safe, try to not kill yourself with the thousands of volts (shouldn't happen since the current is minimal, unless you customize your leyden jars and make them too big).



youtube.com/watch?feature=player_embedded&v=23ukTKdDZKU

"Tradition says Pythagoras, during water supply works in Samos around 530 BC moderated the workers' wine drinking by inventing the 'fair cup'. When the wine surpasses the line, the cup totally empties, so the greedy one is punished."

Now you don't have to go to the island of Samos to get one! Print one now!

Launches a ping pong ball a suprising distance with good accuracy.

Used for a math/physics projectile motion lab.

Sphere with additional radial deformation of SphericalHarmonics.
out.stl: l=15,m=2

This is part of a system of prints that turns an Open Beam into an optical rail. An optical rail is a long, straight, sturdy rail onto which optical components such as light sources and lenses can be bolted down and easily shifted along the length of the rail.

Commercial optical rail sells for $115/ft. Open beam only costs $10/m or $12/m for the fancy black anodized stuff. You get the idea.


This component is part of the open-source optics project, whose goal is to radically reduce the cost of scientific optical hardware: This component is part of the Open-source Optics Library: Zhang C, Anzalone NC, Faria RP, Pearce JM (2013) Open-Source 3D-Printable Optics Equipment. PLoS ONE 8(3): e59840. plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0059840

This 3-d representation of the space-time continuum lets you put the power of the mysterious wormhole in the palm of your hand!

(now with fixed stl)

Sure, we are a bit later than the scientists at CERN, but we found one too! Make your very own replica of the Higgs-boson particle. This fella is a scale model 1.40x10^23 to 1 scale model by mass.

1.26 GeV = energy
c = speed of light
e=mc^2 gives m = 126 GeV/c^2
1 GeV/c^2 = 1.783×10−27 kg
mass of h0 particle = 2.24 x 10^-25 kg
mass of h0 made on my MakerBot = 31.5 grams

ratio of mass of MakerBot model to one detected in the Large Hadron Collider:
31.5g/(2.24x10^-25 kg) = 1.40x10^23:1

A couple of these are hidden around New York near our current office in Boerum Hill, and two are in the Baltimore area. They are in geocaches, and need your help to make their way over to the geocache at the Large Hadron Collider!

makerbot.com/blog/2012/08/03/makerbot-finds-higgs-boson-particle-too-and-so-can-you/

Created by Todd Blatt

This is a device used for testing middle school students' structures. It is an improvement on putting a structure across two sawhorses and hanging weights from the structure!

I've used it for "Jinx Wood" bridge structures as well as sheet metal structures.

Check out my TeacherHann YouTube Channel - youtube.com/teacherhann - for videos of my students projects being tested to destruction!

Kudos to my colleague, fellow middle school Design and Technology teacher Gord McGill for allowing me to replicate his idea!

Simple three-gimbal gyroscope toy.

This model represents the solution to the diffusion equation with the initial conditions of the Heavside function, H(x).

You can think of it like this: Imagine you have a thin metal bar and heat up one side, so that it is uniformly at some temperature, and the other side is uniformly at a cooler temperature. As time passes, the heat will flow from the warm side to the cool side. The position on the bar and time are the two axis, while heat is the height.

Since the diffusion equation also governs things like the diffusion of a chemical in water, there are many other possible interpretations. Read more at Wikipedia:

secure.wikimedia.org/wikipedia/en/wiki/Diffusion_equation

This model was made with one of the predecessors to surfcad. You can read more here:

christopherolah.wordpress.com/2011/07/16/surface-oriented-cad-math-telescopes/

en.wikipedia.org/wiki/Heron%27s_fountain

a gravity powered fountain based on air pressure. You could probably use it as a brainteaser for a high school physics class in the beginning of the school year. I might start a series of water pressure/air pressure demonstrations in the same form factor, then make racks for storing them, etc.

This is a simple catapult. It's a proof-of-concept model to illustrate the function of a catapult.

I'll upload a functional model eventually.

a system designed to record vertical acceleration during an impact and feed the data back over a standard serial connection.

using the acceleration and mass of the object software creates the impulse wave.