The Geneva Wheel is a simple mechanic base unit for converting a continuous rotation motion into an intermittent rotary motion. See en.wikipedia.org/wiki/Geneva_wheel Its used in clocks and similar mechanics.

Inspired by some laser cut projects on Thingverse I made this crossbow for my son. It uses a rubber band and has the gun lock built into the handle. It will shoot a sucker dart across the kitchen and stick it to the microwave with a satisfying smack.

While talking to Zach I got inspired to model lego bricks in order to create custom bricks - the ones you always wanted but thought you never could get. Well now you can!

Of course it does not snap in place as nicely as original lego bricks but it should be good enough to create the custom lego piece you always wanted.

Nope, not Dash Rendar, Ponda Baba, or even the young Lando Calrissian. It's your favorite smuggler Han Solo lovingly packed in carbonite for convenient shipping and storage. Enjoy Han Solo by yourself or with friends. Han makes a lovely conversation piece and will be certain to make you the center of every party.

I owe a special thank you to Sci-Fi 3d { scifi3d.com } and the awesome free STL editing package Netfabb { netfabb.com }

Party Poppers - little things that go bang when you pull the string, not the other kind of popper. Beat the New Year Party Popper Ambush with this cunning contraption that can let the paper shrapnel of nine 28mm PP's rip simultaneously - or go on the celebratory offensive and visit a party full of very surprised friends!

At last, the symbol of Star Trek is on Thingiverse! I created this because a friend of mine wanted to dress up as a character from Star Trek, and didn't have the appropriate gear. The clothes are pretty easy to find, but the badge isn't so simple to get a hold of... or at least it wasn't.

The stl seems to skeinforge weirdly, which probably has something to do with the way I joined the two pieces of the badge. Having printed it I can attest to the fact that it prints very well, despite the perilous overhang, which leaves plenty of room for any small electronic bits you might want to insert and try to make the badge do something cool.

Sorry for the rendered image - I haven't printed one out for myself yet.

Trying to make planetary gears.

The Polyalphabetic Substitution Cipher Slide Rule. This is a slide rule to assist with the ciphering and deciphering of polyalphabetically enciphered messages. With it, you can learn a bit about how slide rules work and a bit about crypto at the same time! It also has some added features that let you begin exploring strong crypto.

12 5-sided polygons that fit together to form a dodecahedron. This is probably the smallest buckyball that you could realistically make. There a solid version, and a "wired version", which is way way easier to put together. This is to mess with you geometry-lovers out there.

some right angle tools i made when i needed them

It works, but unfinished. Need to connect mini-centers together to get some multi-action going.

In the end, it's going to be pretty badass.

u cut this out in thin acrylic as well as cardboard to double check some sand paddles i was buying for my atv. not positive if its 100% correct, it should be right, but the rims didnt match the holes nor my bike. but the piece seemed to align up

only setup for 4x100 and 4x115 bolt patterns

Just a couple of square gears and a frame to hold them more of a curiosity than useful thing.

Another non circular Gear
Drawing created using software I found while Googling for Non Circular gears, so credit goes to Jeff Schoner. His website can be found here decidedlyodd.com/cw/cs285/

This is a quick drawing I made of some planetary gears. We're trying to make some gears for our logo, and hopefully these will do the trick.

It seems that many of my things I'll be giving as Christmas presents this year are small, less then a few inches in dimensions. That brings up the question, How do I pack it? One could put the thing in a envelope or a small plastic bag, but all of those like a distinct "giftiness", they don't really look like a gift.

Enter the Folded Box, it's small enough to print and/or cut from a piece of standard size card stock. You can also easily customize it with a logo or name to make it that much cooler.

The box is cut from a single sheet of material. Thick paper, card stock and poster board work well. This pattern will not work well with corrugated cardboard since the thickness of it will make the folds difficult to make.

There are two sizes:

The 7x8 pattern produces a final box that is about: 2.5 x 2.5 x 1 inches inside.
The 8x8 pattern produces a final box that is about: 3.5 x 2.5 x 1 inches inside.

If you are interested in more of my stuff check out: 4volt.com

It's a geared calling card! Two slots in the top layer display different information as you turn the smaller gear, and a little window lets you watch the gears mesh.

The other day while hacking at NYC Resistor, I realized I was getting a crick in my neck sitting hunched over at my laptop. I needed some sort of laptop stand to get the screen up higher, and one that I could get my external keyboard under so my computer wasn't too far away. I'd never seen exactly what I was looking for, so I figured I'd whip one up!

A little while later, with some help from Inkscape and our Lazzzor, I had this laptop stand.

Because the stand is made from 3 flat pieces which you can take apart, it's extremely portable and light.

A calling card with working planetary gears. Astound your friends, frustrate your nemisii.

(Update: I've moved the gears slightly to the right, reducing the number of cut parts to assemble.)