06 Apr 2014 in
When I need to model a 3d part or work with another designer’s files, I almost always turn to Blender. I use it in my spare time to design 3d printed household parts. I use it at work when working with more organic designs and jewelry products for MixeeLabs. If you just want to simply extrude a logo or image, there are other tools. But if you want to model more complex shapes, I recommend checking out Blender.
Blender may seem like an odd choice because it isn’t really built around product design or 3d printing. Its main use case is for 3d animation. However, I’ve used many different packages, and I always go back to Blender.
Now, I am not a professional 3d modeler. I’ve worked with 3d printing since 2010, and learned a lot about 3d modeling as a result. Blender has often been criticized as not being easy to learn, but based on my own experience starting from scratch, I think it’s actually a very manageable modeling package.
Blender is free and works across platforms
People with different budgets and different operating systems often ask me to recommend modeling software. I want to recommend something that will work with their operating system, and operates in their price range.
This flexibility and cross compatibility also makes it easy for me to work with different designers, because Blender is able to import and export basically all the different file types. We developed the Mixee Labs plugin for Blender because it doesn’t require designers to switch operating systems to run our software, or shell out thousands of dollars for new modeling software.
Last, it is one of the few modeling programs that work (well) on Macs. Some of the most popular packages (e.g. SolidWorks) are only available for Windows. Others provide only buggy versions for Macs. Blender works just as well on my Mac as it did on my old Windows machine—I can’t say the same about Excel.
Using the spacebar to find the “scale to volume” feature
Blender is chock-full of features, which are powerful but can be overwhelming for beginners. This is a common criticism for why Blender is not beginner friendly. The Spacebar Search is an elegant way to make features more accessible without reducing the feature set for advanced users.
You press the spacebar and search for features by name. This is perfect for when I can’t remember the hotkeys or what feature is on which toolbar. As a bonus, through using the Spacebar Search, I learned the hotkeys for my most commonly used features. It ended up as a nice educational tool as well.
I use it for precision modeling, organic models, texture mapping, and sculpting
One of my favorite things about working with Blender is that I can use the software regardless of what type of modeling I need. Many packages focus on certain type of modeling—architects and jewelry designers would use very different modeling software. Blender certainly has its focuses (3d animation), but I’ve found it adaptable to all my modeling needs.
Blender’s strength is in artistic/organic modeling—characters, figurines, sculptures. So, it has great mesh modeling and texture mapping tools. Many CAD packages don’t have great tools for adding textures for color 3d printing. In addition to mesh modeling, Blender also has a sculpting engine for those who modify models as one would do with clay.
As for precise mechanical parts, this is Blender’s weakest area, but it is good enough for me. I can measure distance and wall thickness. I can resize parts to specific measurements (albeit sometimes there’s a little addition and subtraction involved). For me, the bottleneck is more on 3d printers' ability to print with accuracy than in the model file’s accuracy.
(Rudimentary) 3D Printing Tools
When modeling, there’s the Ruler/Protractor Tool to help you measure wall thickness. This is important when you are optimizing for both cost, time, and structural strength.
There’s also a 3d Printing Toolbox—an addon that calculates volume, surface area, and overhangs. This is necessary for estimating cost and print-time.
That said, my Blender files often need little fixes before sending them to the printer. However, there are programs like MeshLab and NetFabb that help fix your files. Also, if you use a service like Shapeways, they will fix your files automatically before it goes to print.
Active community, fast development
Image courtesy of BlenderNation
Blender has an amazing and active community. This means there are lots of people to help troubleshoot, write tutorials, and develop new features. This is one of the first things I look for. In lieu of corporate support hotlines and dedicated support teams, strong communities help you navigate the ins and outs.
This doesn’t just apply to features—the UI is improving as well. Blender gets a lot of slack for having a bad UI. Blender 2.5 (IMO) greatly improved on the UI, and now there’s even a dedicated team to further refine the UI.
Nothing is perfect, Blender is no exception
Of course, I always want more.
I would love better tools for parametric modeling. I would also love integration with fast slicers and OctoPrint.
I would love to aggregate all the tools I most commonly use into one toolbar (with nice icons) and then hide the other parts of the UI I don’t use. Yes, I know you can do this with Python scripting… but… Python scripting.
Currently, it is the best package out there for my needs. If you are interested in getting started, I highly recommend BlenderCookie’s Getting Started Tutorial Series. It’s a six-part series that goes from how to download Blender, to making your first animation.
Thanks to Aaron Barnet for giving me feedback on drafts of this post
25 Mar 2014 in
Over the past few weeks, a game called 2048 has hit the scene. In a short time, there's been many spin offs and variations of the game. It has become some sort of "a thing" in the dev community. It even has its own XKCD--that's when you know it's made it big. This is why I think it has gained so much traction.
1. Fine line between thinking and button mashing
2048 is an addicting game because it occupies this powerful and difficult to find space. It's brainless enough to where you can play for hours on end without putting in much effort, but not brainless enough to where it's boring. You use your brain just enough to feel like you are working hard at something, but you aren't actually working hard so it's all good.
2. Little achievements, one at a time. Sometimes.
When you play 2048, you can sense that you are making progress towards the goal. Numbers combine to make higher numbers, maybe there's even some fun sound effect (I don't know, I mute all my games). The achievements come often, but at random time intervals. You may get a small combo pretty often, but the big combos are more sporadic. Random level ups keep us going. It's the same theory they use in slot machines (you win a little often, but you win at random).
3. Open source >> developer meme
The developer made this open source, so other developers are riffing. Some developer made a version in sed, an AI version, and of course the Doctor Who version. It's a meme based on meatier derivatives. It's not just slapping some funny text onto a picture (well, with the exception of the Doctor Who version).
5. Building off of shoulders of giants
Surprise, surprise. This game is not original. It is based on 1024 which is based on Threes. And that's perfectly ok. You can recreate something that's better in some way, but not original in all the ways. The gameplay isn't original, but 2048 had a more modern "webby" looking design than the previous versions, it's open sourced and hack-friend, and it uses a web-friendly platform. That said, the tweaks to the gameplay were pretty spot-on. When compared with its predecessor, 2048 brought more button-mashing into the mix and nudged it closer to the sweet spot.
23 Mar 2014 in
A few weeks ago, two articles in 3d printing caught my eye. Both writers talked about how they wish their 3d printer was better. Upon closer read, I realized that a lot of their points were related to the software used to power 3d printers, not feedback around the actual 3d printers.
Eduardas Afanasjevas write about 3 ways to make Ultimaker better. The interesting thing is that all of his suggestions is based around software improvements, not necessarily machine improvements. It’s about how to slice files smartly and model validation--software.
The next day, I saw an article in Slate about the new Solidoodle 4. The article complained about a few different issues with his Solidoodle, but again, a lot of his gripes had to do with software, not with the actual machine itself (though to be fair, a lot of problems were with hardware). Most importantly, he made a comment about the lack of files available online to print--quality model repositories are software products.
Another need that I personally have is for the toolchain to be simplified. Currently, I find base files on Thingiverse, tweak or model from scratch in Blender, fix files with NetFabb, slice with Simplify3D, and send files to printer with OctoPrint. I would love to combine all of the above into one product. And all of the above are all software.
There are a lot of new 3d printer companies cropping up--most of them make 3d printers. And don't get me wrong, there's a lot of improvements that need to happen with the hardware (mostly around reliability). But given the amount of issues that are software related, I am a bit surprised I haven't seen as many 3d printing companies focused around software.
It makes me wonder about opportunities here for Mixee Labs to get involved, and what that would look like. Right now, we focus more on making creators or product templates for industrial printers, but perhaps we can apply our knowledge to the world of desktop printing as well.
18 Mar 2014 in
When I was younger, I remember some old guy told me that fashion was cyclical. The same styles come back, fade out, and come back again. He said, as you grow old you see these trends cycling through. I don’t consider myself that old, but I guess I am old enough to observe a cycle in the way we produce online content.
When I was in high school, blogs like LiveJournal and Xanga were the way my friends and I produced online content. People posted about their lives, read each other’s blogs, commented. I even met some of my future classmates through our college’s pre-frosh LiveJournal community.
Then sometime during college, that all stopped. Rather than creating original content, we substituted in quick actions. We liked on Facebook, retweeted on Twitter, and reblogged on Tumblr. There was this one button content “creation” phenomena.
We are swinging back. People have gotten tired of the quickie content creation. They yearn for meatier content. I think that is driving the explosion in new blogging sites focused on writing. Whitespaces, no distraction, markdown… anything to make it easy to write meaningful content. I am looking at Ghost, Svbtle, and Medium.
Perhaps to invent the next step is to look back. Revamp some of those crazy ideas of 1990s like web rings and LiveJournal communities, but with a Web 2.0 spin—minimalism, flat design, maybe something with Node.js or Firebase or whatever is the hip new thing on Hacker News.
After all, some of those PowerPoint animations that we made fun of are revamping into jQuery $.fadeIn(). iPhone apps now zoom in and out just like my high school PowerPoints once did. The past comes back. Maybe it disguises itself with a sunglass-mustache-combo, but it does come back.
17 Mar 2014 in
I went to MIT this weekend for Healthcare’s Grand H@ckfest—and we got first prize! I brought my 3d printer so we can print an physical prototype, and so we did. We designed, hacked, and 3d printed a new medical device in 24 hours.
I figured at a place like MIT, most (if not all) have already seen, hacked apart, rebuilt 3d printers. I figured my 3d printer would be just another random piece of technology strewn about in the hallways.
I was dead wrong. The 3d printer was a hit!
We had a constant stream of people walking by our table to ask about 3d printing, take photos, or just gawk at the machine. While printing late night in my host’s dorm room, her hallmates kept poking their heads in to check out the 3d printer. In Brooklyn, people turned their heads to check out my cute puppy. Here, people turned their heads to check out my 3d printer.
This was a good reminder that I live in a 3d printed bubble. People in this bubble spend our time dealing with nozzle clogs, loose wires, buggy CAD software, supply chain, business tax accounting (yes, it’s that time of the year). It’s easy for the wonder of 3d printing to get lost in this day the day.
One student said to me, “you have such an amazing life.” I did a double take. When I think of 3d printing in my day to day business, I think of the sales tax preparation coming up, the retail channel contracts to finalize, the material QA issues to sift through—not so amazing stuff.
It’s good to step out of my bubble. It renews wonder. It sheds new perspective. It validates or invalidates assumptions. I’m glad I had the opportunity to do that this weekend. I’m glad it reminded me to step out of my bubble more often.
15 Mar 2014 in
The trend today in 3d printing is hitting it big with the consumers. With everyday people. Printer companies are making their printers more and more sleek. The idea of the "one button" push and print is ingrained into many marketing campaigns.
Is that the right strategy?
I've been mucking around with the Raspberry Pi today. I am playing around with it, setting up the wifi module, the camera. I have had to fiddle around with it in the same ways I have to fiddle with a desktop 3d printer. I tweaked this setting, I plugged it in, took the plug out, tweaked that setting, rinse and repeat. But it didn't bother me as much. Because, the Raspberry Pi is a toy for the hackers, it's a toy that comes with the expectation that you have to tweak, Google, and following all sorts of tutorials to get it working.
I think setting that expectation is important, and might be a better strategy for 3d printing. I'm not saying we shouldn't try to get consumers to experience 3d printing, but rather tell the story of "making and hacking," rather than the story of "push and play." It's a more honest story, and I think in some sense a more rewarding story.
When you hand somebody a block of clay, the expectation is that they will work to better their craft. It's not a story of push and play. But the work and the learning to become a better sculptor is just as rewarding, if not more rewarding, than the end result.
I wonder if it should be the same for 3d printing.
13 Mar 2014 in
Most 3d printers are still hand assembled. The hands might belong to factory workers, or oftentimes, they belong to the end user. Most 3d printer companies sells kits that you then assemble. I've actually never done this before, so I found this video quite amusing. It's a timelaspe of a 30 hour printer assembly project. From unboxing to first print.
In my experience, many of the problems that people run across stem from this manual assembly process. Manual assembly leads to more room for error--a slightly off potentiometer, a wiggly thermistor registering inaccurate temperature readings, axis belts not taught. Those are just some of few issues that I've personally ran across.
I am not a "hardware person," so I don't know how far we are from having 3d printers assembled by machines (more appropriate, no?), with soldered or enclosed parts that don't wiggle out of place. Of course, it also means the end machine is less hackable, which means the standard of quality has to be magnitudes higher. There is nothing more frustrating than working with a broken machine that I can't tweak.
12 Mar 2014 in
I talk to a lot of people, well, complain to a lot of people about things that needs to improve in 3D printing. I have had my fair share of annoyances with all the printers I've tried to use, and all the service bureau's I've tried. Don't get me wrong, I am still net positive on the industry. And that's actually saying something because, as I mentioned before, there are a lot of annoyances.
Anyway, I thought it might be good to keep a list. Maybe some points will develop into products, maybe other companies will tackle other points.
Things I wish for in hardware
- Self leveling printer bed, or print head that adjusts its level based on distance sensors
- Self diagnosing machines. If you are going to break, tell me what is breaking--whether it is a clogged nozzle or loose belts
- Easy to clean nozzle, nay, self cleaning nozzles
- Faster speeds
- Smoother, shinier prints
- In general, more stable machines. Axis stays aligned, belts stay taught, potentiometers stays correctly calibrated
- Cheaper machines (yes I want my cake AND eat it too!)
Things I wish for in Printering Softwares
- Connect and monitor via wifi (Octoprint is the best! It should come with every printer setup)
- Smart slicer, automatically adjusts to different layer thickness based on slopes
- The second prize is you can manually adjust. Which I do, but it is a bit of a pain.
- Support picker, manually pick where you want support (Simplify3D got this right)
- Snap-easy support generation (Simplify3D already got this)
- Fast slicing times for complex files
- Comes with a wizard to calibrate your printer. An actual wizard would be nice, but I'll take some step by step guide as well.
- Auto raft, smart raft generation for prints with low surface area for bottom layers
Things I wish for modeling software and repositories
- Categorization by usages (hardware, bathroom, toys)
- Time to print
- Inspiration--the test should be that most of the people you show, will find something they need to have in under 10 seconds
- Products come with tutorial where you can see how they are made
- Products come ready to tweak in browser
- Amazingly fun tutorials
- Gives you warning when you design something that's hard to print (thin walls, too many overhangs)
- Gives you volume/price/time to print estimates
- Parametric, SolidWorks style
- Adjust walls for instance
- Or maybe gear sizes
- Takes best practice from 2D graphic software
- Bucket fill, magic wand tool
- Vector line drawing
- Tracer tools
- 3D printed parts recycling service, because.. well.. I have a lot of plastic
- Better tutorial/knowledge base. We are still at the point where we need to troubleshoot. A lot of troubleshooting. So might as well make that process easy to navigate.
- Combining the repository, modeling, and printering software
There's still a long ways to go in 3d printing. But, and I am hopeful that one by one these things will get knocked out.