After printing a few square lithophanes I realized the corners usually got off the printbed.
In order to fix that, here is the non-square (polygonal) version of the lithophane generator.

Special mention to this other customizable lithophane by **MichaelAtOz:** thingiverse.com/thing:78719

Original description from Makerbot:
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Click "Open in Customizer" to turn the image of your choice into a Lithopane! We used the Mona Lisa, but you could use any photo you want. The Lithopane tool generates a 3D model that looks like a rough terrain map.

Download the file, print it on your MakerBot Desktop 3D Printer, and you've got a picture perfect pane to hang on your window.

Three cheers for the lithopane pioneers on Thingiverse, such as cymon and pp3dpNL! For more information on this old art form, check out the Wikipedia article here: en.wikipedia.org/wiki/Lithophane

A simple spool holder.

By Carlosgs and Víctor Uceda.

This robot was designed and built two weeks ahead the Cosmobot competition (http://www.roboticspot.com/cosmobot/).

The title is pretty descriptive :)

Printing the vertex of the top flat makes it easy to get a nice finish!

No support required :)

Trying to print a pyramid vertically without getting the top vertex being a plastic mess is a challenge.

I have not found a pyramid resting on a side for a more easy printing, so here it is!
No more messy tops!!

The source is from "Small Calibration Pyramid" by LawrenceJohnston (http://www.thingiverse.com/thing:22340)

I have also added the equilateral version of the pyramid.

Cyclone (Circuit Cloner) is a design for a CNC mill intended for PCB manufacturing.
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It is a work in progress, looking forward to your suggestions and improvements.

Special thanks:
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- This design woudn't have been possible without the encouragement of the **Panda CNC community** (https://plus.google.com/u/0/communities/102402711800402614517)
- Also, thanks to **Obijuan** (http://iearobotics.com) for naming the machine Cyclone :)

Our glass door had stopped keeping itself closed, so I made this parametric part to fix it.
Now the door closes properly, which helps saving energy by preventing heat-flows.

Check the pictures for details.

We are looking for new ways to create a compact solution for moving the axis of a CNC machine. This is one of the concepts.

The main idea is that the threaded rod is still (it does not rotate). Instead, the nut is the one that rotates.

Please check out the video: youtube.com/watch?v=gZ7W4M-OSXI

Testing a caterpillar track that is printable in one piece :)

UPDATE: Here is a video! youtube.com/watch?v=nigrV9n9658

UPDATE 2: New version 1.2 of the tracks and wheels: more curve to avoid slipping

I wanted to share my improvements on the great printable hexapod by Ijon:
- an STL plate for printing in small machines like the Printrbot Jr
- Sample Arduino source code based on the ArduSnake oscillators library by Obijuan

New version of the ArduSkuBot.
Using an Arduino UNO, the Printshield and CNY70-board it has all these features:
- Ultrasonic distance sensor
- Two light sensors
- Line sensor
- Two buttons
- Four LEDs
- Piezoelectric speaker

Remember the MiniSkyBot? It just got better!
Using an Arduino UNO, the Printshield and CNY70-board it has all these features:
- Ultrasonic distance sensor
- Two light sensors
- Line sensor
- Two buttons
- Four LEDs
- Piezoelectric speaker

Circuit board that simplifies making Printbots based on Arduino UNO! :)

It is one-sided so anyone can make it easily.

Features:
-Two light sensors (LDR)
-One ultrasonic distance sensor
-Two buttons
-Four LEDs
-Four servo-motor connectors
-Compatible with CNY70 board (http://www.thingiverse.com/thing:26819)

Easy to make, one side circuit board for using with Printbots like the ArduSkyBot or the HKTR-9000 :)

After printing the original Android (thing 1902), I added holes with OpenScad, so now it is possible to use 3mm plastic filament to create hings that are actually flexible and sturdy :)

Just a creeper-themed guitar pick :)

I found this great Sketchup design by ALX: sketchup.google.com/3dwarehouse/details?mid=112d9018c88671703fdfd6bc6322f73b&prevstart=0
So I exported it to STL, adapted the (approximate) real size scale, and printed the model :)

I liked Siorinex's idea, but found it a bit bulky, so I made it smaller, rounded inner hole and a bit easier to parameterize.

Simple educational robot for learning how to use various sensors (light, line, distance...) with Arduino UNO.

It features the CRM-Shield and a four-CNY70 board for reading a line on the floor.

Gotta love the NES. I had seen a few designs around here, but none of them color-printable. So after a few trial-redesign rounds, here is the final result :)

This is the logo from the great spanish website scenebeta.com/
I did not made this 3D design (only adapted it). The author is Antonio Vicente (https://twitter.com/#!/LoopinLoopin).

Simple shield board that allows to connect servo-motors and other devices (like sensors) to the analog pins of an Arduino board (UNO or MEGA).
It also has a connector for the batteries.

You can use it in printbots like the MiniSkybot or the ArduSnake! (http://www.thingiverse.com/tag:printbot).

With the new Slic3r "Cooling" option, using a fan in the hot-end to cool the layers faster is a great improvement in the print quality and speed.

This part was designed to make it possible to cool down the hot-end heatsink and at the same time blow some air on the printed part, without dissipating heat from the hot-end itself.

I was very inspired by thing thingiverse.com/thing:16266 but also wanted to have airflow over the printed part.

Trisquel celtic symbol with number 23 and CGS on both sides.

A friend of mine asked me for a unicorn keychain. I saw the horse design (thing:8308) and quickly added a horn with OpenScad.
My .scad code is rubbish, I warn you. It uses the .stl model of the original design and adds a squared horn.
You can use the .stl directly :)