Stroll through any aisle at Walmart and you will notice that a lot of what you can purchase comes from China and is made from plastic, because it simply costs significantly less due to China’s expertise in manufacturing.
Even five years ago, using a 3D printer to create products at home could beat the costs of Chinese-manufactured products by 90 percent or more. A recent study I co-authored found that even inexperienced consumers could make their money back from investing in a $1,250 3D printerwithin six months. By printing just one product a week over the course of five years, a consumer could not only recoup all the costs associated with buying and running the printer: They would save more than $12,000. These savings only increase as trade wars raise prices higher.
For those new to 3D printing at home, there is a strong culture of sharing, where people with design skills share the digital instructions needed to print their creations on free online databases like MyMiniFactory, Thingiverse and Youmagine. There are millions of free designs already available, including jewelry, artwork, musical instruments, household items and tools.
After purchasing a plug-and-play 3D printer – for between $200 and $1,000 – consumers can use a 3D design search engine like Yeggi to scour dozens of databases for free designs, download the design files, open them and click “Print.” Most consumer items have many variations available. For example, instead of buying a drone at a store, a person could download and print one of the more than 1,900 free quadcopter designs available online. Using a 3D printer in this way is the same as using an office paper printer, although you do need to assemble more complex products like drones and scientific tools.
It gets better: Many designers let users create new custom variations of basic templates by adjusting a few parameters with free software. Freely customizable products include orthotics and artificial breast prosthetics that normally cost hundreds of dollars and can be printed for pennies, as well as toys like fidget spinners. Even simple mass-manufactured products like flexible o-rings and cheap toys like action figures, 3D puzzles and masks can be printed for far less than purchasing them from China.
The availability of 3D printers isn’t just giving consumers new options to make final products. It is already showing hints of changing global commerce as profoundly as the current trade wars might.
In fact, many companies that make 3D printers use them to make their own products. Aleph Objects, the small American manufacturer of the Lulzbot printer we used in our studies, actually uses 140 of its own printers to manufacture the 3D printers it sells. There are dozens of companies selling relatively low-cost open-source 3D printers that can make their own replacement parts. Even the latest generation of printers from HP has 3D printed parts.
And for home consumers concerned that the original China tariff list – much less its expanded replacement – includes extruders that make the plastic filaments most 3D printers use as raw materials, there’s a new solution. My research group just freely released the design of a recyclebot that makes 3D printing filament from post-consumer plastic waste. The device itself is made of mostly 3D printable parts and drops the cost of filament from commercial prices of around $10 to $20 per pound to only a few pennies per pound to make it at home. China can never compete with that – even without tariffs.