FabScan - Affordable 3D Laser Scanning of Physical Objects

The images on the left show some scans made by the scanner.
The software allows to automatically produce a .stl of the scanned pointcloud.

For more information on the project check this site: hci.rwth-aachen.de/FabScan

Spiral bevel gears (conical, helical), proof of concept

Look at :
en.wikipedia.org/wiki/Spiral_bevel_gear
for some theory.
Actually my naming of these files is wrong, the gears ar not hypoid !
This means that the rotational axes of these two gears do cross through one point in space.

Gcode generated with netfabb-Ultimaker edition, Martijn's build-style, 0.15mm layer height.
Printed on my (standard) Ultimaker, speed 250%, fan on (great machine !)

NB: the teeth were decreased in size somewhat to account for the fact that Ultimaker/netfabb produces parts that are almost exactly 0.3mm too big in x- and y-direction (z-direction is fine). Simply scaling the parts up or down (too much) would render the teeth too small or too big, respectively.

NB 2: due to the nature of the ProE module I used the default Csys got rotated by the same angle that the teeth are pivoted, 45°. Rotate the STL (back) by the same angle and you should be fine.

A friend at our makerspace made a little engraver with some dvd burners, following this Instructable instructables.com/id/Pocket-laser-engraver/ (working surface : a bit more than a business card)

But I wanted to give it a nice structure (and maybe an enclosure later), this first version is even foldable :)

More pics and progress on our wiki :
wiki.nybi.cc/index.php/Pocket_Laser_Engraver

This is a derivation of the concept i used for the "BIC powered ballpen" , but with different style.

Its pattern like fishnet stockings and its smooth curves inspired me its name.

improvements are: less material needed, and you can see the cartridge through it.

See it in action!!!
(select 720p hd and fullscreen!!)

youtube.com/watch?v=1Oq3vD4pQIQ

And tell me if you successfully print it, i do not have a 3dprinter, thanks...

Does the world need another earbud holder?

Well, this one fits Apple earbuds and stores the cable neatly.

This is the first iteration (third internal) of my attempt to make printable Velcro. It is pretty nice to hang things, probably this small piece will resist much more than a kilogram of weight (hanging weight) and it is very easy to remove.

3d printing revolution is just starting, I don't say this is a flawless piece but I really consider it is a very good example about a very sweet future about us modifying our brains from "search-buy-adapt" (frustration included) to "think-design-print" (self-pride included :D ).

Quick demo video: youtube.com/watch?v=BtLSMI3xVDY
Quick demo #2 (perpendicular): youtube.com/watch?v=eLehgIfjmpA

This was an object that did not exist in our 3d printing world, so I like to think this is an "upgrade" from real world to a better virtual&teleportable world ;)

To those who have emailed me about the lack of files.. I'm updating the files please be patient no one is paying me to do this so progress is slow. My printer is also under repair and it will take some time to test my mods. The reason for the mods are to corrects some problems and to back out changes made for the museum challenge as the entry was unsuccessful.

My redesign (derivative) upgrade of a classic toy from my childhood, the original one still can be purchased in shops but they do NOT fly horizontally. This one does, in fact it can even fly over houses and get lost! Lucky we can print another! It improves our world because when you pull the cord and it flies off horizontally the gyroscopic effect tracks it straight and level and gives you a big grin. Smiling people are happy and happy people make the world a better place. It takes advantage of the accuracy with which a 3D printer creates parts to produce a very precise aerodynamic and balanced flying toy that only works well due to the precision of a 3D printer. I'm designing different Prop Rockets for it say tuned :-) bigger faster further!

Updated to identify the aspects for the new museum challenge

I am radically redesigning the Prusa Mendel. I call it the 2012. More plastic parts, less hardware, and some much needed improvements.
Read about it here:
plansandprojects.com/My%20Machines/PrusaMendel2012-1/
New parts will be uploaded as they are proven.
Many features are derivative of other parts on thingiverse. Thanks to everyone! We are standing on the shoulders of giants.

The "lightbulb" is a 5-sided spiral that forms the general shape of a lightbulb. I made this a few years ago as a test piece and I've updated it just for you.

I've included two sizes:

Full size: about 4.8 inches tall
Half size: about 2.4 inches tall (...yep, that's half...check!)

I've also included each STL file in two resolutions.

This is a 100x150x68cm box made with openSCAD.

EDIT 09/30/2011 : I've added the .scad files in the .rar. The names are in French so I hope it's clear enough. I've made the shoulder and the arm after i've fixed my box size, therefore if you wish edit parameters everything might not realign correctly.

EDIT 10/09/2011 : I've cut the bottom part and the shoulder in half to be printed on a Makerbot.

This is the first release of the Boot-strappable Open Laser Cutter project that I've been working on for the past few months. The goal of the project is to construct an open design laser cutter with a large cut area (about 1 meter square), for about 5%-10% of the cost of a commercial system. The design draws heavily from other open laser cutter projects out there (such as the Buildlog 2X Laser Cutter) in using inexpensive aluminum extrusion and optics for most of the structural frame, while here most of the custom parts are 3D printed from ABS.

The printed parts represent about 10 hours of total printing time on a Makerbot or Reprap, and have been designed with the hope that they would be of general utility to anyone printing out a large CNC system -- not just a laser cutter. These include parts such as NEMA17 motor holders that mount onto t-slot, idler brackets, pillow block bushing mounts for motors, idlers, and shafts, and so on.

This OpenSCAD script provides modules for both Spur and Bevel Gears. It has some major enhancements over my original gear script thingiverse.com/thing:3534. It uses some of the spur gear nomenclature code from TheOtherRob github.com/TheOtherRob/MCAD with my own code for generating the involute teeth. The bevel gear is also my own work. Thanks also to elmom for some enhancements to my original gear script thingiverse.com/thing:3547.

Enhancements include the Bevel gear module, backlash settings, parameterised number of facets for the involute curve and whole of tooth generation to avoid some of the issues the original script had when mirroring a half tooth.

The STLs provided are not intended for direct use, but instead show examples of what can be done with the parametric script.

Parametric Involute Spur Gears take the following parameters:
number_of_teeth
circular_pitch or diametral_pitch: controls the size of the teeth (and hence the size of the gear).
pressure_angle: controls the shape of the teeth.
clearance: The gap between the root between teeth and the teeth point on a meshing gear.
gear_thickness: the thickness of the gear plate.
rim_thickness: the thickness of the gear at the rim (including the teeth).
rim_width: radial distance from the root of the teeth to the inside of the rim.
hub_thickness: the thickness of the section around the bore.
hub_diameter
bore_diameter: size of the hole in the middle
circles: the number of circular holes to cut in the gear plate.
backlash: the space between this the back of this gears teeth and the front of its meshing gear\'s teeth when the gear is correctly spaced from it.
twist: for making helical gears.
involute_facets: the number of facets in one side of the involute tooth shape. If this is omitted it will be 1/4 of $fn. If $fn is not set, it will be 5.

Parametric Involute Profile Bevel (Conical) Gears take the following parameters:
number_of_teeth
cone_distance: The distance from the pitch apex to the outside pitch diameter.
face_width: The length of the teeth.
outside_circular_pitch: The circular pitch at the outside pitch diameter.
pressure_angle: Defines the shape of the teeth.
clearance: Gap between the tip of the teeth on one gear and the root of the teeth on another meshing gear.
bore_diameter: The size of the hole in the middle.
gear_thickness: The thickness of the gear for bevel_gear_back_cone finish (see below).
backlash: Makes the tooth width smaller to make a gap between teeth of correctly spaced gears to allow for manufacturing tolerances.
involute_facets: As for spur gears.
finish: Specify either bevel_gear_flat(0) or bevel_gear_back_cone(1). If you don't specify this parameter you will get a flat gear for pitch angles less than 45 degrees and a back cone gear for pitch angles greater than 45 degrees. The example shows both with the small gear being the flat one.

Update: v5.0 Implements backlash for bevel gears (This was not working in v4.0).

I've decided to upload this as a new version due to the number of changes made.

Update
Oct 11/11
Created thingiverse.com/thing:12429 All the parts are manifolded so they can be imported by solid modelling tools like OPENscad. They will not give errors while slicing. Also made into three sheets for a 200 x 200 printer.

Aug 20/11
Added missing bevel gear

Videos of rough cut tests (emebedded in comments as well)
youtube.com/watch?v=VSuPAbLClPE
youtube.com/watch?v=klVjdnjPjzY

Video of first cutting test (embedded in comments as well)
youtube.com/watch?v=_2z1gkRdGmA

Video of first drill test (embedded in comments as well)
youtube.com/watch?v=ueP7hwicZSs

Video (embedded in comments as well)
youtube.com/watch?v=4rrh6Pl4vow

Please see the original for more details.

Changes made from the original.

Turned hand crank for lead screw 90 degrees.

Simplified main carriage. Removed quick release lever in favour of fixed nut.

Added feet/guides to stabilize main carriage.

Simplified transmission from 16 speed to 1 speed for the initial release.

Abandoned original chuck in favour of:
thingiverse.com/thing:9232
thingiverse.com/thing:9179
thingiverse.com/thing:5791

Added star crank for tailstock.

Added lock wheel to allow tailstock to be locked for drilling and to spin for use as a steady bearing.

All Modelling done with Blender 2.5x

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Tool Holders ----NEW---
thingiverse.com/thing:9711