What if Your Kids Were Right?



On April 26, 2016 I published an article about some discussions my son and I had frequently about the Moon and Mars and how we could use a 3D printer there (if you can read Moliere’s language, french, here is the link to it). The main subject was to, one day, use a 3D printer with recycled material made from things that became useless or from raw material directly collected on the surface of the planet or deeper in the crust. Why doing that instead of using new material especially made for the printer? Well, let’s say that because 1 kilo of freight still requires more than 8 kilos of propellant for a little trip to mars, it makes the freight cost quite expansive.


In April 2018, I wrote another article around the same topic: How can we get cheap material to 3D print what we would need once arrived on another planet (As this article is in Shakespeare’s language, it should be easy for you to read it following that link). Researchers in the Canadian University of Calgary had found a way to transform the production of your digestive track into a solid material that will work very well in a SLS 3D printer.

Markus Kayser and his great invention, the Solar Sinter, was in my article too. Using the energy from the sun and the sand from the desert to 3D print objects was genius.


And the story just got one more chapter thanks to the great work at the Tethers Unlimited Company. These guys created the Refabricator. A few weeks ago, it was delivered to the International Space Station (ISS). The name of the machine speaks by itself. Something useless that was fabricated before can be transformed in raw material to re-fabricate something with it. In the size of a refrigerator, you get together a 3D printer and a recycling machine that can feed directly the printer to re-use, for example, the packaging of the scientific equipment you just got from the delivery boy on his space scooter.


Of course the Refabricator II doesn’t exist (yet…). But someday, in one or two years from now, I will write a fourth article about the concretization of an idea my son had when he was about six years old. The title will be “From a little boy’s dream to reality”. He will be reassured that having creative ideas is a good thing. Great ideas rarely comes from following the main road.

I encourage you all to foster the creativity of your kids and discuss any topics they find interesting to them, even the craziest ones. It will be good for them and for us, parents.

How to get a surprising material to 3D print while traveling towards Mars


Almost two years ago, I wrote a blog (in French 🙂 ) with my son about the use of recycled material to 3D print on the planet Mars. The idea was to turn into powder anything we didn’t need anymore once arrived on Mars. It could be plastic parts, aluminum or other metal parts. I even mentioned that we could melt the sand we can found on the red planet to build shelters or buildings. Scientists are already working on all these ideas.

Researchers in the Canadian University of Calgary have found a new source of material to use in a 3D printer. It could even be useful during long space travel. They will recycle the “result” of your short stay on the toilets. That’s right, thanks to a special process and a hard working special enzyme, they will create a solid material that will work very well in a SLS (Selective Laser Sintering) 3D printer. If dogs are allowed for these kind of trips, we will get even more material 🙂 .

Modern Space Toilet

Going back to the use of sand, it reminds me of the 2010 adventure of Markus Kayser, an industrial designer and pure genius. He designed a 3D printer able to 3D print by melting sand. He did his experiment in the Egyptian desert. Solar cells were there just to deliver the energy for motors, the sun tracking system and the electronics.

Markus Kayser and his Solar Sinter

The melting energy was provided ONLY by the sun through a Fresnel lens. The concentrated sunlight, thanks to this Fresnel lens (like the lenses at the top of lighthouses), was enough to melt the desert sand in order to print objects like this bowl.

Bowl made of sand

As you can see, the kind of material you could use in your 3D printer is sometimes surprising. Thanks to the imagination and genius of some people, new possibilities are created all the time. These guys don’t limit themselves to the usual.

I encourage you to apply for yourself and your kids, my today’s take-away advice: Always look beyond your habits to break your limits.

Have a great day!