alt Hacker NewsWhat about that license makes you think you can't use the device (i.e. print things) for commercial purposes?
The license applies to the thing, not the thing you print using the thing. Me writing software or prose on a computer running Linux using a GPL editor wouldn't change that the copyright of what I write belongs to me, the author.
You can't make a commercial competitor of this printer using their design, but using the printer for its intended purpose (printing) is obviously unrelated to that.
> You can't make a commercial competitor of this printer using their design
Which means it's not open source. Open source means you have the right to distribute work however you want, including commercially, provided you also provide the source under the same license terms as the original.
The second you slap a non-commercial limitation on there, it ceases to be open source.