Naturally, if you’re [Daniel Riley] of RCTestFlight, then you have to 3D print a few of them ... but commercial toroidal boat props exist too. Test results of the different boat propeller ...

ErectorCraft has officially launched as the first company in the United States dedicated to the commercial production of ...

In one of those weird twists of fate, there’s currently a very high chance that anyone who owns a 3D printer has made a boat with it. In fact, they’ve probably printed several of them ...