Jeffrey McGrew, our principal and co-founder, gave a keynote speech at Autodesk University this year! The whole keynote is embedded above, and Jeffrey's on around 24 minutes in.

Core 77 also transcribed his speech, and posted it on there blog, with a nice little forward.

Our good friends over at the Instructables asked us if we wouldn't post up how we made the Serpent Twin's tails. So here it is!

Enjoy! It's our first big instructable so we'd love for you to go there and leave us a comment on it.

Also, if you want to see the Serpent Twins in person, there is a big party this weekend at Jon's shop. All are welcome!

A couple months ago we signed on to help with Form & Reform's project for the Burning Man festival: The Serpent Twins project. After a very busy few months (and one very dusty adventure!) they came together wonderfully.

The final two fully-drivable serpent sculptures not only look amazing, they are filled with color-changing LEDs. Color and video routines can play down their entire length, creating stunning effects. With a full sound system and accelerometer built into each head, the lights can also change and react depending on the movement and sound as they drive along.

One of the main parts we helped out with were the tails.

While the heads were largely handmade, the tails were fully digitally fabricated. It took a combination of software tools to make this happen. The graceful original form was modeled in Revit, bulkheads and bolts then rationalized in Inventor, and the skin unfolded in Rhino. The digital files for the entire thing were sent out for high-definition CNC plasma cutting. The internal frame slotted together, welded, and then the skins were bolted on. The 'carvel' style skinning lends the tails a very viking ship look and construction, while the fasteners and finishing fit into the overall aviation-theme.

The sheet metal skins of the tails are bolted around a bulkhead frame...

And then attached to their own trailer, where we hide the batteries and generator.

We also designed and milled the thick acrylic decorative glowing medallions to adorn the sides of the serpents.

The white Serpent's body is made up of white plastic barrels that glow from within with LEDs. And the black Serpent has black metal barrels with scale designs plasma-cut cut into them, allowing the same LED light-show to glow ominously. We made many templates, jigs, and fixtures via our CNC machine to help support the largely hand-made processes Form & Reform's traditional blacksmithing demands.

Each head is built on small electric car that is super fun and easy to drive, and all the barrels track so perfectly that you can weave in and around people and things in a most snake-like way. But of course, you must be wearing a winged aviator cap to operate these vehicles! As Kyrsten Mate so fashionably displays...

Check out more photos on Flickr!

UPDATE: Now with video! Here's a nice movie showing how wonderfully they move.

We're honored to be included in this year's BIMForum conference in Phoenix, AZ! We'll be giving a talk about BIM-to-CNC fabrication on Thursday afternoon, January 14th, at 3:15 pm. We'll be focusing a lot on our in-house process we use to go from BIM to Digital Fabrication. We'll also be talking about the big changes that have been recently happening in that space. With a few fun things to show off, we've got high hopes that it will be a great talk!

In the past, CNC machines were used to solve one of two problems: either you needed to make a whole lot of something quickly, or you needed to make something that wasn't easy to make by hand. CNC machines were all about high production rates. And they had to be, for they were ungodly expensive, and the software and know-how even moreso. But now with CNC machines getting cheap enough, and the knowledge widespread enough, so that anyone can use them for almost anything they can think of, well, it really changes the whole game. And that's exactly what were going to be talking all about!

The BIMForum conference is held twice a year by the Associated General Contractors of America, an industry group akin to the AIA or AIGA but for builders. With a focus on emerging technology and it's use in the building industry, BIMForum looks to be wonderful conference of AGC people. People who are really making changes and making things work. So many of these technology-focused building industry talks can wander into the tall reeds of theory. So we're rather interested in talking to a bunch of people who are more about the day-to-day realities of getting things built! We're really looking forward to meeting everyone.

Hope to see you there!

Something that we get e-mails about from time to time is how we use Blender with our CNC machine. Everyone wants to know software, formats, etc. The missing link here is something called CAM software.

You don't go directly from Blender to the CNC controller; there is an in-between step where you generate toolpaths for the CNC machine to follow. Blender can't do this directly, and no one has made a plug-in (yet) for it, so you'll need to use a separate CAM package to do the job.

It goes like this. We model something up in Blender, sometimes from scratch and sometimes based upon an imported Revit model. Once we're happy with it, it gets exported to an .STL file. We then import that file into Vetric Aspire. Or, if it's a two or four-sided milling job, we use Vetric Cut3D (which is a nice cheap solution for 3D milling).

Toolpaths are generated by those tools, and saved out into jobs for the machine to run. Then we setup the material on our CNC machine, setup the machine, and then run that job. The machine goes to town, carving away, and then you've got your part!

We've yet to find a decent open source 3D CAM package. And honestly, the features and ease-of-use of the Vectric tools in combo with their cheap (for CAM software) prices really make it the way to go if you're at all serious about what you're making. While we understand that some out there want a 100% open source solution, we're using Blender because we like it and feel that it's got great features, not because it's free.

Anytime we get a question more than once via e-mail, we like to turn it into a blog post, so that we can share the answer with everyone!

Back in April, we were invited to give a brief talk at the AIA conference in San Francisco. You can download the video here, and the slides are available as a PDF here. No embed, sorry, don't know why the AIA site decided to go with a download for the video.

The talk is a five-minute overview of the five-step process we use here at Because We Can to make stuff, and we're pretty happy with how it came out.

While the AIA puts on a different conference just for technology-focused topics called TAP, for Technology in Architectural Practice, they also had a 'mini-TAP' if you will during the main larger AIA conference.

The San Francisco Digital Design group, an informal breakfast club we're part of, did a group presentation as part of that 'mini-TAP'. It was a http://www.pecha-kucha.org format, i.e. 20 slides with 20 seconds per slide, with ten different people presenting. We were excited and honored to be one of the presenters, as our other nine co-presenters were all terribly smart and experienced experts. I highly recommend watching all the presentations!