August 2010

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Taylor Hokanson and I had a blast demonstrating the DIYLILCNC at Detroit’s Maker Faire 2010. SAIC student Stephen Gulau was gracious enough to lend us his build. We met lots of CNC enthusiasts and converted a some new ones. Here are a few photos!

 

Stephen Gulau's Build at Maker Faire Detroit 2010

Stephen Gulau's DIYLILCNC Build at Maker Faire Detroit 2010.

 

 

Taylor Hokanson and Chris Reilly Discuss the DIYLILCNC on the Make Magazine Demo Stage

Taylor Hokanson and Chris Reilly Discuss the DIYLILCNC on the Make Magazine Demo Stage.

 

 

Taylor Hokanson and Chris Reilly Discuss the DIYLILCNC on the Make Magazine Demo Stage

Taylor Hokanson and Chris Reilly Discuss the DIYLILCNC on the Make Magazine Demo Stage.

 

 

A Demo of Rough and Finish Passes Milled on the DIYLILCNC.

A Demo of Rough and Finish Passes Milled on the DIYLILCNC.

 

 

Taylor Hokanson and Chris Reilly Discuss the DIYLILCNC on the Make Magazine Demo Stage

Taylor Hokanson and Chris Reilly Discuss the DIYLILCNC on the Make Magazine Demo Stage.

 

 

DIYLILCNC Mills a Wind Turbine Blade.

DIYLILCNC Mills a Wind Turbine Blade.

 

 

Bizarre Bikes Bountiful at Maker Faire Detroit 2010.

Bizarre Bikes Bountiful at Maker Faire Detroit 2010.

 

 

Bizarre Bikes Bountiful at Maker Faire Detroit 2010.

Bizarre Bikes Bountiful at Maker Faire Detroit 2010.

 

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Check out this 3D Printer made from a regular Inkjet printer.

This is a pretty impressive if yet crude hack. The inkjet printer prints into the powder and the combination of the ink and powder will create a solid. The solid is built up layer by layer by removing one sheet at a time and printing the next layer. It appears to be a very tedious method but it works. This is also how Z-Corp 3d printers work, however their method is a lot less tedious. The Z-Corp printers have a built in tray and as the print cartridge places ink into the powder, the tray automatically lowers and repeats until the part is complete.

-Mike

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Some examples of [amazingly] high-detail 3D prints produced on Envisintec’s Perfactory 3D printers.  The resolution on these prints is amazing: 25 microns in the Z axis; that means that each layer of material is just a little over 0.0009″ thick!  The fine print detail makes this printer ideal for jewelery,  medical, dental, and other casting applications.  Materials include wax, plastic, and a range of high-temperature polymers.

 

Perfactory 3D print. (Image via the Shapeways blog)

Perfactory 3D print. (Image via the Shapeways blog)

 

 

 

Perfactory 3D print. (Image via the Shapeways blog)

Perfactory 3D print. (Image via the Shapeways blog)

 

The Perfactory is a Digital Light Projection (DLP) printer.  The 3D print material starts out as a liquid; when the liquid is exposed to the printer’s light it hardens. DLP printers form parts by building up and curing very thin layers of polymer, eventually taking the shape of the digital source file.  When printing is finished, the uncured liquid polymer is drained away, leaving the hardened part.  See this link for an example of the printing process.

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DIYLILCNC Demo & Lecture @ Dorkbot Chicago

DIYLILCNC Demo & Lecture @ Dorkbot Chicago

 

Join Chris Reilly and Taylor Hokanson for a demo and short lecture on the DIYLILCNC project at Dorkbot Chicago. We’ll be covering the history and evolution of the DIYLILCNC project, some general background of CNC technology, some of the shortcomings of the present state of CNC and how those are addressed by open-source hardware projects like the DIYLILCNC. We’ll also go over the specs of the DIYLILCNC, giving details about how it is built and its functions.

Dorkbot Chicago @ Enemy Sound
1550 N. Milwaukee Ave,
Chicago, IL, 60622
August 26, 2010 7-8:00 pm
FREE

Dorkbot: People doing strange things with electricity. The main goals of Dorkbot are: to create an informal, friendly environment in which people can talk about the work they’re doing and to foster discussion about that work; to help bring together people from different backgrounds who are interested in similar things; to give us all an opportunity to see the strange things our neighbors are doing with electricity. Dorkbot isn’t really a forum for formal artist talks or lectures, but rather a chance for diverse people to have friendly conversations about interesting ideas.

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Mcor Matrix 300 (via Fabbaloo)

Mcor Matrix 300 (via Fabbaloo)

 

The Mcor Matrix is a desktop 3D printer that uses standard letter-size office paper to print 3D objects from digital CAD files. The Matrix uses a technique called laminated object modeling, reproducing 3D objects by layering thin sheet material, similar to a topographical map. A file sent to the printer is divided up into horizontal cr0ss-sections; a blade or other cutting device (many other LOM printers use lasers) cuts each profile into a sheet of material, which is then laid down on a work bed. Subsequent layers are glued to previous sheets, eventually forming the whole model. Waste paper is left in place, acting as a support material for undercuts in the object. After printing, waste paper is removed (presumably by hand) for recycling. The print resolution is about 0.003″ using standard 20lb. bond paper; thicker paper can be used for a coarser resolution (0.007″) and increased printing speed. Wired has a great pdf outlining the Matrix’s printing process.

 

 

Mcor Matrix Paper 3D Printed Object (via RapidToday)

Mcor Matrix Paper 3D Printed Object (via RapidToday)

 

The Matrix retails for about $30,000, comparable to many other 3D printers. Where it shines in terms of cost is it’s material; paper, of course, is relatively cheap, especially in comparison to other plastic or resin-based materials used in other printers. You can even use printed-on photocopy paper. Other consumables are a PVA-based adhesive used to glue the layers together; currently Mcor has no specific pricing information available for the adhesive, but generally PVA-based glues are cheap on the order of Elmer’s glue or wood glue. Replaceable tungsten-carbide blades are used to cut profiles out of each layer; currently Mcor has no specific pricing information available for the blades.

Paper as a prototyping material has the advantage of being highly recyclable/reusable, giving the Matrix a leg up on 3D print users who make sustainability a priority. Parts durability is obviously fairly low, making the Matrix more suited to visualizing 3D designs as opposed to making more durable/usable parts. I haven’t handled an Matrix print personally, but my guess is the durability  would be a bit more than that of a Zcorp print.

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Recently I had a chance to test out some new rendering software. Bunkspeed Shot is a program that branched off from Hypershot.

When I started up the program I was presented with the option to start a new project or open a project. I went ahead and opted to start a new project and see what I could import. This program can import a variety of file types, such as, obj, igs, etc. However, one file type I was surprised to see and found incredibly useful was to import Rhino scene files. Meaning I can take a file from Rhino, save it, and import it into this program to start rendering. Once the model had loaded I had to figure how to work the program. Granted, I could look through the help file to figure this out, but where’s the fun in that?

Imported Model

Once I had a model loaded up the first thing I wanted to do was change my viewport. The default viewport is a bit small (set at 480×270) and was a bit difficult to work with. I began to search around for a way to alter this and quickly realized a lot of the options I was looking for seemed to be hidden in various menus.

viewport

When I opened the dialogue box that would allow me to change my viewport resolution I found I was somewhat limited in my options. In the demo you are limited to 960×540, 640×360, or 480×270 which seem to be an odd selection of sizes.  It appears in the full version you can choose 1280×720 and fill window. One thing I had noticed is as soon as I tried to bump up the resolution it would warn me that performance would be affected. This may be different on your machine but on mine it made the program very sluggish and even non-responsive at points. So I was stuck with a situation of work with a viewport that is a bit small to work with or choose a larger size and risk the program crashing or running slow.

I went ahead and tried to work with the smaller resolution so my performance wouldn’t be affected. It took awhile to get the hang of the controls and where everything was located. The menu on the right of the viewport has most of the options you will need to set up the render of your file. You have the option to apply pre-made materials, set up environments, back plates, just about anything you’d need. The one option I was looking for and couldn’t find was an option to freely control light placement. It appears it is all predetermined by the environment you place in your file.

camera

One of the side menu tabs will give you some freedom to control the camera. This does not control the position of the camera, that is controlled in the viewport, but rather the attributes of the camera itself. You have complete control over aspect ratio, focal length, aperture, f stop, just about anything you’d need.

Once everything is set up, object positioned and material assigned, it’s time to render.

rendermenu

The render menu gives you a couple of options for exporting, jpg, bmp, psd, or tif. You can freely set up the resolution of the image and the amount of time you want the render to take. I could have it render in 1 minute and sacrifice some of the quality of the end product or bump the render time all the way up to 3 hours if I need as much detail as this can do.

Over all this program looks like it’s a really good program. It took a little bit longer to just “dive in” and render stuff out but once you take the time to learn the program (and look that that help file I ignored) you can really learn to do some decent renders from it. The only problems I had was the sluggish behavior and on a couple occasions it crashed while rendering. This could be tied to my pc I was working with so I urge you to test it for yourself. While this program had branched off of Hypershot, keep in mind, it is NOT Hypershot. The program is set up differently and behaves differently. If given the option I’d probably choose Hypershot just for the ease of use. However, if you take the time to learn this program it might be just as effective as any other rendering software out there.

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We are hiring. We’re looking for printing geniuses who like working in a fast-paced, always changing environment who know their way around the kinds of printing that we do.

We’re looking for student workers for the fall, and two full-time staff now.

Email servicebureau [at] saic.edu for details.

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Just wanted to do a quick post to show off the latest from Claudia Hart. She often uses the Rapid Prototyper to print out manipulated 3d figures. The latest model to be printed is a woman laying across the back of a bear.

 

 

3d Print by Claudia Hart

by Claudia Hart

 

 

 

3d Print by Claudia Hart

by Claudia Hart

 

-Mike

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