Grant and Renuka have been working with a post-consumer recycled glass that is quite course (maybe 150-200 micron particles) but readily available at a low cost . This glass doesn’t do very well with fine details (check out “A New Part for Testing Different Powders“).
I asked Grant to put a couple of Cubist Moai into one of their builds.
The results were quite good. We then thought it would be fun to “flash fire” it (i.e fire at the maximum ramp rate possible) to 1400 deg F. You see the green part on the right and the fired part on the left. I asked about the cracks and learned later that the fired part was dropped just out of the kiln. I dropped it again before this photo shoot (breaking it) only to discover something very interesting.
The part looked like it had been deep fried or perhaps candy coated (a hard glassy candy coating) on the outside. The glass had vitrified on the surface but just barely sinterred on the inside. Interesting! A really unexpected result.
A recent article about openness in consumer product labeling has got us thinking about control points and new technology. Regulators are apparently looking at how inkjet cartridge OEMs label their product. Seems consumers can’t easily figure out which cartridges are cost effective, and what the long term cost of ownership of a particular printer and its proprietary supplies might be. There’s something like this going on in 3d printing, though without the same regulatory interest at the moment.
There’s an aphorism I have encountered in technology procurement: “never swallow a control point”. Avoid depending on a single source with proprietary claims. Buyers of new technology want to have options, backup plans, and competition in the marketplace. Competition does good things. Competition draws out the strengths and weaknesses of functionally similar products; produces new choices that may better meet a buyer’s needs; provides greater flexibility in sourcing orders; and allows a customer to reward or penalize a supplier for its behaviors by staying loyal or changing sources. What’s not always pointed out is that when there’s choice, technology buyers generally want to go with the strongest choice. They want their choice to prosper because they want that supplier, like a great restaurant, to be there for them in the future. They are even willing to pay more to make that happen, so long as it is there choice to do so.
This gets to the development involving printer ink. Inkjet printer OEMs use a business model we can call a “razor and blade” approach: sell the printer cheap, make the ink specific to the printer, and make big profit over time selling ink. This is the “embedded proprietary consumable” model. The text and workbooks, the printer and ink, and in 3d printing, the printer and the OEM powders and binders. It’s not a problem when the consumables are open. Then we can source any supplier willing to provide the consumables. It’s much more a problem when the consumable is proprietary. It takes a deft OEM with proprietary positions to serve rather than swyve its customers.
The challenges start when that proprietary printer becomes a control point aligned against practice. This cuts two ways. First, the control point may be used to exclude us from local practice that’s within the claims of a patent but outside the specs of the product. A US patent has this property, as it gives its owner the ability to exclude all practice under any claim of the patent, even if the product the owner puts on the market doesn’t provide all the functions covered by the claims of the patent.
Excluding local practice does not build customer loyalty. It does the opposite. It creates incentives for customers to find other sources for the next generation of 3d printer. It creates incentives for customers not to report innovative practice back through the sales and support chain to the company for fear of infringement or voiding warranty or losing company support for maintenance and repairs. It creates the perception that the company does not support best, creative practice, but rather works to suppress any practice that it has not anticipated in the product feature list. Poof on that.
Second, a proprietary OEM may establish a control point by requiring materials used in its 3d printer to be purchased from the OEM. This control point means that until an OEM gets around to it, a lot of print materials are generally not available, whether at a lower price, easier to order, more consistent in quality, or with alternative composition. Of course, if the OEM only provides premium materials, for which it has the best margin, then the product exists primarily to serve the company, and only the wealthiest, least exploratory of customers.
While control points look wonderful in MBA theory on maximizing income, they do not necessarily serve a company’s long-term outlook for customer loyalty and staying on the innovation curve. Instead, control points build into premium pricing a mass desire to find alternative technology at the earliest opportunity, creating a classic case of the “innovator’s dilemma” in selling up-market until only the rich and the laggards can afford to stay with you.
With our work, we have identified new materials that work quite well in conventional powder/binder ink-jet based 3d printers. These materials may be obtained from a wide range of sources, with no controls on them, for 2% or less of the cost of OEM-supplied materials. The OEM materials are designed to be great stuff. But for exploration of design, for rapid production in quantity, and other common requirements, it makes no sense that warranty service is voided simply by using common, open materials rather than the proprietary OEM materials at 50 times the cost.
Similarly, we see ways to modify 3d printers to accommodate new print modalities. Rather than working in isolation from manufacturers, we would just as soon be inviting them into our labs, demonstrating what we are doing, and expecting to collaborate on developing new technology that extends the range of the equipment. We have no problem with a company quality control step, or even an emphasis on compatibility with established conventions. And certainly we are good with the understanding the new stuff may have to be supported by the community and not by the OEM. But we’d like to be able to plug in, swap out, and extend the functions of the printer and the materials we use, free of company control points–and with as much company engagement as possible.
What brings us back to do business with companies in the 3d print business is not their MBAs who have figured out optimal price functions, and lawyers aiming to prevent customers from using anything other than supplied product within spec. Rather, we come back for continued engagement that supports the growth of the practice and identifies new roles, products, and services where the company can legitimately earn its keep. That, we think, is a great bargain. We want our technology OEMs to succeed. It’s in our procurement genes. We expect that same commitment from our OEMs. Now if only we could get more of the OEM community to see it this way.
This work is licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported.
If the “child” inside you still longs to play, perhaps you might like to check – Makedo. Makedo is a set of connectors, various hings, and a simple construction tool. The Makedo folks are “seeking to inspire social change through playful creativity”. All parts of the system are made of Nylon plastic (recycled one hopes?).
A set provides hinges (both free and fixed angle), rivet style, and a simple cut/hole making tool.
The Makedo site has a very entertaining video. Give it a watch by going to their site.
As an engineer and designer, I find Makedo a really fun and interesting concept. The basic idea is to turn ANYTHING thin (use provided tools to pierce hole or cut) into something useful for construction / design / art using provided fasteners — think Erector Set.
Lastly, where will an Open / Mashable version of this idea go?
In case you haven’t noticed over the last several weeks, we have been going a little bit Moai Crazy. We have been searching all over the web trying to find actual data from Rapa Nui’s Moai. We have looked through many, many search pages with very little luck. Almost everything is an artist’s model but not the real thing.
Several groups have scanned Moai (including a couple in captivity within museums). We have emailed several groups with little success. Either the data hasn’t been “processed” or they are too busy.
Last week we found Professor Carl Lipo’s site — Evolution Beach. To our surprise Carl had one data set available with Creative Commons License in his August 20, 2009 post. Yes! He had data for an actual standing Moai. It was available in X3D and 3DS formats. A quick spin through Rhino3D and out popped an STL file.
Next step was 3D printing. We, now, had a 3DP’d Moai. I emailed Carl to thank him for making the data available (via Creative Commons) and asked if he’d like one. Also, did he have any more data?
Carl’s Response – “Wow, this is really cool. It’s probably the first replica of a moai that actually matches a real one – usually they are just eyeballed. … I’d love one of these models! … I have more data.”
We exchanged several emails. What fun! All of this is a great example of why the concept of Creative Commons licensing is important. We knew what our use rights were AND we had information about the data creator.
We thank the Moai for the introduction and look forward to more interactions with Carl.
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P.S. Here’s a picture of the second Moai (generated from Carl’s data).
We find information to aid us in powder formulations in some really interesting places — Patents. Within the body of a patent, one must disclose a workable practice/formula for the patent practice. Many folks know that US Gypsum has a REAL interest in plaster and plaster products. We present three different patents which you might find interesting in considering formulating plaster-based 3DP powders.
2078198_SET_STABILIZED_GYPSUM_PLASTER
3573947_ACCELERATOR_FOR_GYPSUM_PLASTER
6379458_Efficient_set_accelerator_for_plaster
Enjoy reading them, if you are looking for more reading in this area, then consider patent searching based on this Assignee. There is truly a wealth of available public information.
Over the past couple of weeks, we have been discussing the need for a test part which allows us to examine the performance of powders. We really wanted a part that was not to big (which allows for smaller powder test batches). The part is little bit of a Swiss Army knife of test parts (a little of this and a little of that). It tests the performance of text positive and negative, thin wall & post positive and negative, and triangles positive and negative (and all in a 10×10x30 mm part).
We present renderings to allow all sides of the test part to be displayed.
We present the results of two powders of different mesh/particle sizes. The top bars are printed in a fairly course powder we obtained from a recycled glass shop. The lower bars are printed in our current best preforming glass powder. The results are quit telling — powder size clearly matters!
Next, we will attempt to set some numerical scale for results in an attempt to score or quantify performance.
The text-test parts prior to firing. Lowercase and uppercase “Arial” text on the top two rows and “Times New Roman” on the bottom two rows.
The text-test parts after firing with a noticeable change in dimensions. The text is legible and the results are very exciting.
This shows off the translucency of the glass (quite a nice effect). There is a small lamp in the upper-right corner of the picture (silver) that is emitting the light. The bottom right corner of the text-test part is allowing for transmission of light.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported.
We were pleasantly surprised to find out that both Urban Glass and Seattle Magazine provided coverage of our Vitraglyphic process for 3DP’ing glass. We would like to thank both magazines.
We would like to thank both magazines.
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