Walking through the soon to be changed shopping mall at 7th and K street, which will be changed into the latest arena, brings back the desire to photograph the holiday decorations in the store windows on the walk to old Sacramento with the tourist stores and the bustle and crowd of the holiday season. With the temperature in the sixties this week, a walk through old Sacramento in search of sites to photograph became a portrait of the seasonal lights, even at noon. Have you thought of making your own holiday decorations and gifts with a 3D metal printer?
Viewing the holiday decor, the art work and ambiance, and the toys, fountains, and gadgets, this author wondered what it would be like to be able to make your own holiday decorations or toys and other gadgets with a 3D printer, to customize items for the event or holiday. Well, researchers recently have done it.
Are you interested in making your own toys, cellphone cases, or glow-in-the-dark Christmas decorations, maybe for next season. How about a brake drum? Scientists built a low-cost, open-source 3-D metal printer, says a December 2, 2013 news release, "Scientists build a low-cost, open-source 3-D metal printer." And the key ingredients are steel, a MIG welder, and a microcontroller. The new work is described in "A Low-Cost, Open-Source Metal 3-D Printer," published Nov. 25, 2013 in IEEE Access. Also check out, "A Low-Cost Open-Source Metal 3-D Printer | Joshua Pearce." Or see, "Open Access Publishing."
Okay, so maybe you aren't interested in making your own toys, cellphone cases, or glow-in-the-dark Christmas decorations. How about a brake drum? Until now, 3D printing has been a polymer affair, with most people in the maker community using the machines to make all manner of plastic consumer goods, from tent stakes to chess sets.
Now a new low-cost 3D printer developed by Michigan Technological University's Joshua Pearce and his team could add hammers to that list. The detailed plans, software and firmware are all freely available and open-source, meaning anyone can use them to make their own metal 3D printer.
Pearce is the first to admit that his new printer is a work in progress
So far, the products he and his team have produced are no more intricate than a sprocket. But that's because the technology is so raw. "Similar to the incredible churn in innovation witnessed with open-sourcing of the first RepRap plastic 3D printers, I anticipate rapid progress when the maker community gets their hands on it," says Pearce, an associate professor of materials science and engineering/electrical and computer engineering. "Within a month, somebody will make one that's better than ours, I guarantee it."
Using under $1,500 worth of materials, including a small commercial MIG welder and an open-source microcontroller, Pearce's team built a 3D metal printer than can lay down thin layers of steel to form complex geometric objects. Commercial metal printers are available, but they cost over half a million dollars.
His make-it-yourself metal printer is less expensive than off-the-shelf commercial plastic 3D printers and is affordable enough for home use, he said. However, because of safety concerns, Pearce suggests that for now it would be better off in the hands of a shop, garage or skilled DIYer, since it requires more safety gear and fire protection equipment than the typical plastic 3D printer. See, "Open-source Metal 3-D Printer Project."
While metal 3D printing opens new vistas, it also raises anew the specter of homemade firearms. Some people have already made guns with both commercial metal and plastic 3D printers, with mixed results. While Pearce admits to some sleepless nights as they developed the metal printer, he also believes that the good to come from all types of distributed manufacturing with 3D printing will far outweigh the dangers.
In previous work, his group has already shown that making products at home with a 3D printer is cheaper for the average American and that printing goods at home is greener than buying commercial goods
In particular, expanded 3D printing would benefit people in the developing world, who have limited access to manufactured goods, and researchers, who can radically cut costs of scientific equipment to further their science, Pearce said. "Small and medium-sized enterprises would be able to build parts and equipment quickly and easily using downloadable, free and open-source designs, which could revolutionize the economy for the benefit of the many."
"I really don't know if we are mature enough to handle it," he added cautiously according to the news release, "but I think that with open-source approach, we are within reach of a Star Trek-like, post-scarcity society, in which 'replicators' can create a vast array of objects on demand, resulting in wealth for everyone at very little cost. Pretty soon, we'll be able to make almost anything."
The work is described in "A Low-Cost, Open-Source Metal 3-D Printer," published Nov. 25, 2013 in IEEE Access (DOI: 10.1109/ACCESS.2013.2293018). The coauthors in the Michigan Tech Open Sustainability Lab are Gerald C. Anzalone, a lab supervisor and research scientist in Michigan Tech's Department of Materials Science and Engineering; Chenlong Zhang and Bas Wijnen, PhD candidates in materials science and engineering at Michigan Tech; Paul Sanders, an assistant professor of materials science and engineering; and Pearce.