This is the staircase of my home, reverse-engineered with Faro SCENECT and Sketchup

Tutorial: youtube.com/watch?v=T56aOkaK488

Have you ever wondered how an automatic transmission works? I did, so I looked it up and then designed this desktop model. It has six forward speeds and one reverse. Real automatic transmissions have a hydraulic or electrical system that engages different clutches and brakes to shift gears depending on the driving situation. With this model you control those simplified brakes and clutches yourself.

The clutch is actuated by sliding the drive shaft through to different positions (which each have two gear markings), while three separate brakes each also have two gear markings. You select a gear by engaging the brake and clutch position associated with your desired gear. See demonstration video: youtube.com/watch?v=-FyC3dn3HJY

I tried to design the gear ratios to be fairly close to what some real cars use, and this is the result, where the input is the crank and the output is the annulus:
1st gear: 1 : 4.29
2nd gear: 1 : 2.5, 71% increase
3rd gear: 1 : 1.67, 50% increase
4th gear: 1 : 1.3, 28% increase
5th gear: 1 : 1, 30% increase
6th gear: 1 : 0.8, 25% increase
Reverse: 1 : -3.93

The OpenSCAD file is included and is highly parametric in case you'd like to play with different gear ratios. If you select a different number of teeth, it will print out the resulting gear ratios at the beginning of the output. I also used Matlab to investigate more thoroughly how the gear sizes affected the various ratios. I used transmission.m as an aid in optimizing the ratios to be somewhat evenly spaced.

This was all printed in PLA at 120 mm/s on a Replicator 1 with Sailfish firmware, default layer height (0.27mm). Everything came out perfectly on the first print. I swear, complex models don't have to be difficult, and who needs glue when you can print snap-fits?

Inspired by my favorite artist Arthur Ganson's "Machine with Concrete", see: blog.makezine.com/2012/04/25/arthur-gansons-machine-with-concrete

This is a printable version of Machine with Concrete. The sculpture is a series of twelve 50:1 worm gears, with each gear reducing 1/50th of the previous gear. With 12 gears, the final gear ratio is a mind boggling 244,140,625,000,000,000,000 : 1 (244.14 quintillion to 1). With the first gear spinning at 200RPM it would take over 2 TRILLION years for a single revolution at the end of the machine, so the final drive shaft can be embedded in concrete or plaster.

I emailed Arthur Ganson a link to this page and he replied "looks FANTASTIC!". For a great introduction to Arthur Ganson and his work please see: ted.com/talks/arthur_ganson_makes_moving_sculpture.html

Video of this thing at: youtu.be/E7Pw2sD2dHg

Nice Roll Top Box.
When the box is opened, the lid hides in a space between two "walls" at the bottom of the box (see photos).
10 X 5 X 4 cm

Cobbal's Companion Dodecahedron processed in Netfabb to flatten the bottom and rescale it.

The Automatic Affirmation Device only has one thing to say:
YES.
Will today be a good day? Will I pass that exam? Is this the best idea I ever had ever?
YES.
The Automatic Affirmation Device is your own personal confidence booster that is never wrong.

This is designed to be a gift, the perfect gift, (for you to give) to someone who is in need of some caring reassurance.

This is just an experiment I made with my iPhone 4 to make a 3D scan of a remote object and then to make a 3D model. Now I am trying to figure out what to do with the 3D model. How to integrate it into something to make a useful thing? It's a big mesh so I guess only 3D printing will work.

Just a Portal Sentry Turret made in OpenSCAD. The design is still lacking the legs, but ill add them soon. Enjoy!

Servo made in the body of the robot.
Controller of the Arduino Nano.
Servo Pilotage S-101 (http://www.pilotage-rc.com/catalogue/75_/75_20/RC10097/)
Transfer effort - fishing line 0.8 mm.
When rotating hinge 2 is necessary to compensate for the angle of joint 1.

3D Printed Miniature Centrifugal Pump Prototype

Prototype only - uploaded on request. Improved version coming soon.

Youtube Video of it in action : youtube.com/watch?v=H102VH8a8bM

madox.net/blog/2010/11/16/miniature-3d-printed-pump-using-up-pp3dp-printer/

Super Miniature version of it here : thingiverse.com/thing:4857

A basic woman made as a test using MakeHuman. makehuman.org/

I made this in an effort to explore printing the human form on my printer and to learn how to use MakeHuman.

The .obj file has the whole body while the .stl files are just torsos.

If you look at the .obj file it has jaw bones, teeth, eyes, and extra "joints" (little closed polyhedrons floating inside). I believe I removed all of those extra bits in the "***test2.stl" although they did not cause me problems when printing the "***test1.stl"

One of our first "human" reconstructions made digital using hypr3d.com 's image-based 3D reconstruction.

This is a project i did for my Open thesis Fabrication, program in the Institute of advanced architecture of Catalyna, in Barcelona, Spain. It is a wind-turbine, that can be solely 3D printed in a RepRap machine, in order to provide people with free harvested energy. The project is still under way so i would appreciate anyone that would be welcome to try to make it, and let me know his ideas. I would also appreciate some help on the electronic part of the project.

This is a bust version of the figurine that's available from here shapeways.com/model/164604/ (this link has more pretty pictures too). You can also get this version at shapeways.com/model/191205/.
It's about 9cm high.

Polyhedron components with symmetric(unsigned) hinges. Also, now with octagon.

The previous kit thingiverse.com/thing:4934 had larger facets and signed snaps, and assembly was a puzzle. This script resolves these problems by using only one symmetric hinge. I adapted a concept from thingiverse.com/twotimes to design these hinges.

These parts are snap and dimensionally compatible with other things tagged "Elements". They are also useful starting blanks for building up more Element-compatible things.

If you noticed that this is a duplicate of the "circular elements" thing, you're right. I posted renderings separately for those who don't want to invoke OpenSCAD scripts.

3.2.2011 UPDATE. Added thin top truss parts for easier assembly.

This is a modular kit of parts to create a truss bridge. The sample shown has two center sections. The bridge can be made longer by adding more center sections and more piers if needed.

The parts list is shown for a two center section bridge.

file: assembly_110227h.skp shows the assembled orientation of the bridge.

file: bridge_4_110302.skp presents the parts in the printed orientation.

This is a complete two-leg walking mechanism of Theo Jansen.

To build a complete walking Robot, you'll need this Thing 4 Times and some Construction for the two Motors and Control of them.

OpenScad file allows you to specify size and number of blades. The example stl is a 5-blade fan.

This is a pocket watch housing for the highly programmable Makerbot Watch. ( wiki.makerbot.com/makerbot-watch ) Designed to protect the circuit board when not in use, while being able to hinge open for easy tinkering.

Inspired by the feedstock hinge ( thingiverse.com/thing:1358 ) , I tried to use the least amount of hardware as possible. The ABS filament acts as the hinge pin, and the clamshell parts have built-in bumpers that keep all the components well constrained. Adding 3mm magnets will really give the whole thing a robust feel.

There are two versions posted:

1. watch top.stl, watch bottom.stl; -These are pictured and have a more finished looking aesthetic, and more refined bumpers.
2. (rev4).stl; -These are an ultra light weight ribbed version that have a consistent material thickness, however requires a well tuned 3d printer.

For anyone who wants to make something similar, there is a dxf quantifying(1:1) the critical features of the parts.

This is an alternative extruder hot-end design for the makerbot, though it may work for other 3d printers as well.

The big advantage is that it does not require an insulator (usually PTFE or PEEK), which causes problems for some (or perhaps many). Instead, a stack of washers and nuts is used as a heatsink to reduce the temperature.

It worked really, really well for me, no more stalled extruders, stuck filaments, half-way prints. It heats up rapidly less than 1 minute from 25 to 220 degC), and I haven't had any problems with it (yet..).
I've only printed ABS so far, so I have no idea if it will work with other materials.

My original version used an aluminum heatsink (bottom image), but I thought that might be a bit hard for others to duplicate, so I built this one. Works just as well, just looks a little less fancy.

You'll need a small fan, stainless steel M6 bolt as well as a stack of M6 nuts and 25mm M6 fender washers in addition to asome components from a standard makerbot extruder.

Something fun.

Mesh ball created in TopMod, imported into blender.
It bounces off a concrete floor... not sure how long for though :)

Would make a great cat toy too.

What's cooler than transformers? A Cupcake CNC transformer with a Bre head? This is a fully articulated assembly that transforms from a Cupcake CNC to a Bre-bot.
I started with a snap-together design (see the attached concept sketches) but migrated to a bolt-together kit for various reasons. The final design allows for fine adjustment of the joint tension so the transformer can stand in any position but still be movable, positionable, transformable!

See the animated transformation here: jmillerid.com/wordpress/2010/05/cupcake-cnc-transformer/

Modeled in NX6, rendered and animated in Modo, .stl files cleaned up in Blender, exploded view created with Rhino and Illustrator, sketches with Sharpie.

Here is a small toy elephant modeled in VectorWorks. I have included other versions of the file for people to play with.

Have you ever wanted a Gothic Cathedral of your very own?

Are you intimidated by the centuries long construction schedule, and the punishing job requirements of being a European Bishop during the Dark Ages?

Then We Have a Thing For YOU!

The Gothic Cathedral Play Set!

Beco Blocks are 3d printable, snap together, ball and socket based building blocks.

Initially created as a prototype for another ball and socket based project, these blocks functioned so well I decided to make a number of variations to allow the creation of more complex objects.

Created at Robots and Dinosaurs, the Sydney, Australia hackerspace.
robotsanddinosaurs.org/

The ultimate spare parts kit to keep your extruder printing day in and day out. Enough parts to make a complete heater barrel assembly, or replace replace other key components.

This is my first model to this forum, so be nice :)

I design this her wind turbine for the desktop. There has been a solar panel which generates electricity on to the little engine that sits up in the turbine head.

youtube.com/watch?v=FkYCw5SYI6Q

This is a badge for your 3d printer. I got the idea from Cory Doctorow's story called Printcrime.

I made two versions of it, a has just a border that holds the letters, b has a solid backing. I'm not sure which one is better.

Continuing Star Trek themed logos.


TNG here thingiverse.com/thing:1209 (by worldgnat)
Voyager here thingiverse.com/thing:1782

I designed this necklace to give to my girlfriend.
Hope she doesn't see it on here before I give it to her :)

I made it in blender, and for some reason couldn't get the top tube to connect to the bottom half properly, but it still printed fine.

It has a 6mm tube with 4mm hole for a chain.

I printed in PLA, which looks soo good.