This is a 48 inch wingspan sailplane of my own design. All parts have been 3D printed using PLA. The wing has been test flown, but the entire assembled plane has not yet been tested. The wing uses the Eppler 214 airfoil.

**** Two files updated 18 May 2013 ****
The two files are the Vert_stab and Fuselage_tail files. A very minor change was made to the vertical stabilizer by removing some material at the bottom of the control linkage channel. I've added a feature in the fuselage tail part to allow trapping the sheath end of the flexible control cables using two set-screws. This prevents having to cement the sheath in place to prevent movement.

Focus is a 3D printer that is designed to print using Selective Laser Sintering. Focus can also be adapted for FDM, 3DP and lasercutting/engraving.

The design of this Office Organizer is based on the Fibonacci Sequence (1, 1, 2, 3, 5, 8, 13, 21, 34 ...).

Update FibonacciOfficeOrgB-V2:
The vertical dimensions are now as well Fibonacci numbers (8, 13, 21, 34).

This is a protein model that can be assembled (polymerized) in an analogy to what happens inside living cells.

Actin is a protein involved in maintaining a cell's shape, as part of what's called the cytoskeleton. Actin exists as monomers, but certain conditions (like the actions other proteins, or the presence of certain salts) cause the monomers to stick together and create these long, helical filaments.

Read more about actin here rcsb.org/pdb/101/motm.do?momID=19

A remix of Areeve20's "Sharpie Cap Screwdriver", Bulked out a bit, and added a slot where a small magnet can be mounted.
I printed this remix with a Makerbot 2 so I redesigned some components to work more smoothly with this 3d printer in particular. (I ran it at 1.2mm resolution)

Quite a wild test I wrote to try out Taulman's 618 Nylon (I would also love to give it a try using Ultimaker's Flexible PLA).

I got the Nylon just a couple of hours ago and I still need to tune tons of things, 1st impressions are very promising!

Some of the pictures show another test printed using PLA as material. In that test the "slope degrees" was set to 25degs (65degs overhang) I also got acceptable print quality with 20 degrees.

I'm trying many (too many) new (to me) things here so I better keep it short. More details in the instructions.

New printer based on the Mendel Max and the Prism style printers but constructed from Open Beam 15 x 15 aluminium extrusion.

Designed for a 200 x 200 x 125 print area.

Open Beam Prism blog: nzec.co.nz/r3dwood/
3D printer movies: youtube.com/user/wiredkiwi
Printer webcam (whenever printing): tinyurl.com/97uglwz

Shows the manufacturing and operation of an RGB light using a digital LED strip controlled by an application by means of a serial comunication: Bluetooth, Zigbee or USB.
Part list: wooden support (optional), RGB digitally-addressable LED strip (from Adafruit or Pololu...), microcontroller (arduino pro mini, for example), Bluetooth .OR. Xbee .OR. an USB wire.

Below, you can find a demo video and the link to the git repository with all the code involved: software and firmware. Questions or suggestions are welcome

More info: madebyfrutos.wordpress.com/2013/01/07/my-rgb-lamp/
YouTuve video: youtu.be/yhes_WA0_Wo
Code on Git: github.com/astromaf/MyRGBLamp

Update:

The latest release of this can be obtained from github.com/Pacmanfan/UVDLPSlicerController/tree/master/UVDLP/Published

I have just release the initial 05 alpha version. Check reprap.org/wiki/Creation_Workshop for the reprap page and instruction manual.


Hey Everyone, I've been working recently on building a UV-Resin based 3d printer with a DLP projector. One thing that I have noticed is the complete lack of open-source software for UV-Printers. What I am uploading here and hosting on GitHub ( github.com/Pacmanfan/UVDLPSlicerController ) is an open source project that can be used to:
1) Load and Slice Models
2) Control a 3d UV/DLP printer.

Take note that this software is still alpha, and I haven't finished the actual hardware portion of my printer yet.

To answer a few questions ahead of time:
-This project uses C#, and seems to work on Windows and Linux (under Mono) just fine. Mac is untested.
- Yes, my STL loader has some bugs, your models may or may not work, I'm fixing it.
- Multiple monitors are supported. The secondary monitor on the system is assumed to be the DLP display monitor.

I'm using my Generic Printed Axis as the Z-Axis for this printer. thingiverse.com/thing:37123

I'm also using a cheap 1024x768 Infocus DLP projector from Ebay.

I hope to address all the mechanical issues surrounding this very soon.

I'm looking for others who can contribute to this project.

You can follow me on my BlogSpot : probjectblogs.blogspot.com/

Burrito Bomber Tube. Visit darwinaerospace.com for more information about "Burrito Bomber".

Check out the video:
youtube.com/watch?v=3lqMRHwGsRA

twitter.com/darwinaerospace
facebook.com/DarwinAerospace

This is a Processing app that will load a JPEG or PNG, convert it to a halftone image (with many parameters), and output a STL[1] or OpenSCAD[2] file.

Make cool halftone coasters. Use them as plastic "rubber" stamps. Make art!

This app was a result of a question posed on the Makerbot Operators Google group, and was written in 10-12 hours over the course of a few days. Feel free to take it and add features or make a standalone app or whatever.

You can download the source as well as packaged executables for Windows, OSX, and Linux.[3]

DISCLAIMER: This app is presented as-is and does not come with ANY support. (No time for that here, sorry)

NOTE 1 - the resulting STL files MUST be run through a post-processing app like Netfabb to create printable models.

NOTE 2 - the resulting OpenSCAD files can take a REALLY LONG TIME to render in OpenSCAD before you can save a STL from there.

NOTE 3 - I've only tested the OSX executable (which works fine), but not the Windows or Linux ones. I've mostly run from source.

For the four other people on the planet who manually lap petrographic thin sections. This holder is sized for 27mm x 46mm x 1.27mm petrographic slides.

Little indentations for fingers prevent knuckle rolling and subsequent abusive epithets...

3D printed optical mount system for use with extruded aluminum angle from the local home store

I had this idea of making a hover craft that could be propelled by balloons, but that idea didn't work because balloons weren't powerful enough to keep the propellers going. The whole thing ended up spinning on the table rather than hovering in the air, which led me to turn it into a spin top that would keep on going and going if you pump air towards either the propellers themselves, or into the opening duct in the centre of the thing. It'll speed up and keep spinning until you want it to stop!

Here's a video of the spin top in action.
facebook.com/v/10151411385621004

I like the idea of constrained sketches available in FreeCAD. This is a hack to transfer them to OpenSCAD without too much trouble.

This Thing is an adaptation of Dan Newman's excellent Inkscape plugin (parent Thing). The main changes are:

1) Runs without input and saves .scad in the same folder as .svg file (see instructions below)

2) Does not extrude shapes, but keeps them two-dimensional

3) Ignores some transformations, and units, to get same size in OpenSCAD units as in the FreeCAD sketch.

4) Minor technical changes to circumvent ugly crash bugs in Inkscape (and FreeCAD's svg export, I think)

If you've ever wanted to fly an experiment to the edge of space, this is your chance! PongSat by JP Aerospace is the World's Space Program! A Pongsat is an experiment stuffed inside a ping pong ball, and we fly them for FREE! Sky's (no-- SPACE) is the limit! What will you fly?

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

Hello Everyone! I made a NEMA 23 sized version of my Generic printed axis. I'm currently using this for the Z-Axis on my CNC mill. It's Rock-Solid. I use 8mm rods and LM8UU Linear bearings in the slider.

Back by popular demand (you know who you are)... another Jansen linkage, in a shiny Makerbot friendly edition (some assembly required, your mileage may vary, multiple prints required).

This one uses TBuser's pin library v2. I added the file for convenience but its origin is thingiverse.com/thing:10541.

The pins break too easily, even when the linkage is big (and that's why its still a thing in progress). I toyed with different pin designs without success. Then I started using acetone... and it got messy so I want to avoid it.

I'm thinking about printing the pins separately using a different orientation (a nice feature of the pin library). Any suggestions?

I liked hugomatic's thing, but it needed pins oriented sideways and separate from the links.

A set of parametric OpenSCAD scripts that generate ready-to-print two-part molds from arbitrary STL models.

These scripts can be used to generate either **square** (with or without rounded corners) or **circular** two-part molds and are fully parameterized to make it easy to adapt for your application.

Refer to the instructions below for some general tips, as well ideas for casting.

I have successfully made casts from these molds using wax, Knox gelatin, Oogoo and chocolate. If you have success with other casting media, please leave a comment!

Many more pictures of molds and castings I made with these scripts:
flickr.com/photos/zenwebb/collections/72157631531182783/

If you'd like to read about the development process for these scripts, and learn from some of the issues I came across, check out:

- jason-webb.info/?p=4741
- jason-webb.info/?p=4892

If you really want to bring your molds to the next level, you can even try the "lost ABS" (or lost PLA) process to turn it into metal: jason-webb.info/2012/11/lost-abs-experiment-with-3d-printed-objects-and-aluminum-casting/

I have also uploaded a parametric open-face mold generator to create positive and negative molds: thingiverse.com/thing:32657

This is the Quantum ORD Bot. It is 3D printer mech platform made from MakerSlide linear bearing. It is extremly ridged and very easy to build. The design can easily be scaled in X,Y and/or Z by simply changing the Makerslide lengths plus belt and leadscrew lengths. This is the mini or 'Quantum' version. The parts other than MakerSlide are either off the shelf standard items or easily fabricate with a laser cutter, 3D printer or CNC router. There is a blog post giving a lot more detail.

buildlog.net/blog/2012/01/the-quantum-ord-bot/

As a reference point, this size uses less than $15 worth of Makerslide extrusion. You also need about $45 worth of MakerSlide wheels, spacers, etc. The Makerslide parts are available at the MakerSlide store. Be aware the rail is released in weekly 'production batches' and sells out very quickly. It is 'restocked' on weekly basis.

I have attached the complete 3D design in STEP format plus a DXF of the flat parts. If I can generate enough interest, I may have about 50 sets of parts fabricated and offer kits. That would be for the mechatronics platform only. The extruder, electronics, etc would not be included.

Why spend $200 for a set of printed parts when you can have everything you see here, including motors, belts, pulleys for about $200?

Planned changes.
1. I plan to change the crossbar handle thing to an extrusion to make it more scalable.
2. The 'quantum' design currently uses NEMA14 motors. I plan to tweak the parts to be compatible with NEMA17. This just adds a second pattern to some parts.

20mm Plastic T-Slot - Rev 2
Completely redesigned; the new beam prints faster and is stronger both against deflection and torsion.

UPDATE: Added DXF of Profiles. Naming convention is [dimensions]-[bolt size]-[Wall Thickness]-[Multiplier]. We are starting to prefer 1pt6 (1.6) wall thickness profiles and find printing them No Infill, 1 Extra Loop, No solid Layers, with a trace thickness of .8mm results in a quick and adequetly strong beam.

These beams are being designed as the main structural component for a 3d printer though arguably they are of more use as a general hobby framing and mounting set. That said they are designed with both printing and commercial extrusion in mind.

If printed in ABS, they can be solvent welded with the aid of a T-Slot Welding Jig thingiverse.com/thing:13598 and ABS Glue thingiverse.com/thing:14490 . A center hole increases the beams second moment of inertia while aiding in fusing beams.

PLA beams are more rigid though they are not as easy to fuse into various lengths.

Hardware
An example of Friction Fit hardware is located -
Here - thingiverse.com/thing:9797
& Here - thingiverse.com/thing:13599

The standard beam profile is meant to accommodate both M3 hardware as well as 6-32 nuts and bolts. Both bolt heads or nuts will fit in the slot with an insert provided to help guide and captive M3 nuts. 6-32 Nuts will captive natively.

Alternative profiles are provided for M4 / 8-32 hardware as well as dedicated M3 and 6-32. All profiles are located in "20mm Profiles - Printing.skp" Use the 'Push/Pull' tool to create a profile of the desired length.

If the printing instructions are followed, these beams can be printed fast (going at even a moderate pace we're able to produce all the beams needed for a Prusa in under 12 hours). While the beams can technically be printing with any working profile, they will not print as quickly and may not perform as intended structurally.

Files
100mm Beam.stl - actual height is 101mm to allow for loss during welding
20mm Test Beam.stl - shorter for testing settings
M3 Nut Insert.stl - use with metric hardware
20mm Profile-Printing.skp - profile faces for printing and creating different heights
20mm Profile-True.skp - diagram of a properly printed profile
20mm Profile-Printing-pt4.skp - profiles based on 0.4mm widths, contains a M5 profile
M3 Nut Insert.skp - source file for insert

Check Back For
T-slot Profiles for Thing-O-Matic, Ultimaker & Mosaic at various resolutions, speeds.
OpenScad version to ease design of compatible hardware and accessories.

I just spread out the bearing mounts to fit the LowRider X-Carriage designed by TwoTimes

Still upgrading my Cupcake! This is a compact lightweight Y stage for the Makerbot Cupcake that uses SW4G linear bearings.

note 11/1/12: I added an 8mm version as well since Apparently some Cupcake models use 8mm rods. This should fit an LM8 linear bearing. This is untested - I am assuming the rod spacing is the same as my model.

11/3/12 I added two more experimental versions modified to fit the Lowrider - 1/4" and 8mm versions. Also original Rhino 3d files

I designed this to be able to use my Dremel tool & extension shaft as a small cutoff saw. It can cut about 1/4" (6mm) diameter stock in a single cut, or 1/2" (13mm) by turning the stock.
Requires an extension shaft with a 1/2" diameter handpiece; unfortunately, a lot of the extension shafts currently available have contoured handpieces and won't work.
ZIP file contains source files from Solidworks 2011.

Our kids keep losing the tape dispensers, so I decided to make one. This one fits a standard roll of scotch tape, has printed spring clips that hold the tape securely and printed teeth that cut the tape.

Print it now and be prepared to wrap presents!

P.S. We actually found 2 tape dispensers in the time it took me to perfect the design, but it works great.

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?

Takes a flat strong plate and turns it into a moebius strip with only one side and one edge.

Interim version of the GRBL Tidy case, this version uses a clamping mechanism to retain the limit and stepper cables. You may need to add sleeving / heatshrink to get the proper diameter for the clamps. I am working on a new version that will replace this with a pcb breakout.