The prototype for Contractor’s pizza printer (captured in a video, above) which helped him earn a grant from NASA, was a simple chocolate printer. It’s not much to look at, nor is it the first of its kind, but at least it’s a proof of concept.

Replacing cookbooks with open-source recipes

SMRC’s prototype 3D food printer will be based on open-source hardware from the RepRap project.
SMRC’s prototype 3D food printer will be based on open-source hardware from the RepRap project.
Image: RepRap

Remember grandma’s treasure box of recipes written in pencil on yellowing note cards? In the future, we’ll all be able to trade recipes directly, as software. Each recipe will be a set of instructions that tells the printer which cartridge of powder to mix with which liquids, and at what rate and how it should be sprayed, one layer at time.

This will be possible because Contractor plans to keep the software portion of his 3D printer entirely open-source, so that anyone can look at its code, take it apart, understand it, and tweak recipes to fit. It would of course be possible for people to trade recipes even if this printer were proprietary—imagine something like an app store, but for recipes—but Contractor believes that by keeping his software open source, it will be even more likely that people will find creative uses for his hardware. His prototype 3D food printer also happens to be based on a piece of open-source hardware, the second-generation RepRap 3D printer.

“One of the major advantage of a 3D printer is that it provides personalized nutrition,” says Contractor. “If you’re male, female, someone is sick—they all have different dietary needs. If you can program your needs into a 3D printer, it can print exactly the nutrients that person requires.”

Replacing farms with sources of environmentally-appropriate calories

2032: Delicious Uncle Sam’s Meal Cubes are laser-sintered from granulated mealworms; part of this healthy breakfast.
2032: Delicious Uncle Sam’s Meal Cubes are laser-sintered from granulated mealworms; part of this healthy breakfast.
Image: TNO Research

Contractor is agnostic about the source of the food-based powders his system uses. One vision of how 3D printing could make it possible to turn just about any food-like starting material into an edible meal was outlined by TNO Research, the think tank of TNO, a Dutch holding company that owns a number of technology firms.

In TNO’s vision of a future of 3D printed meals, “alternative ingredients” for food include:

From astronauts to emerging markets

While Contractor and his team are initially focusing on applications for long-distance space travel, his eventual goal is to turn his system for 3D printing food into a design that can be licensed to someone who wants to turn it into a business. His company has been “quite successful in doing that in the past,” and has created both a gadget that uses microwaves to evaluate the structural integrity of aircraft panels and a kind of metal screw that coats itself with protective sealant once it’s drilled into a sheet of metal.

Since Contractor’s 3D food printer doesn’t even exist in prototype form, it’s too early to address questions of cost or the healthiness (or not) of the food it produces. But let’s hope the algae and cricket pizza turns out to be tastier than it sounds.

📬 Sign up for the Daily Brief

Our free, fast, and fun briefing on the global economy, delivered every weekday morning.