Damn, I should check with the authorities what applies in Sweden, of course I forgot to do that.
To take two extreme examples. You assemble a chair. No one objects if you sell your DIY wooden chair. On the other hand, if you build a small nuclear reactor... Yep, a mad man in Sweden was building one. Let's say he didn't get it together before the authorities searched him, so no sale was ever considered.
"Wanted to build a nuclear reactor
The 33-year-old man from Ängelholm "is very interested in nuclear physics and radiation". But the experiment with a nuclear reactor at home on the kitchen stove went awry. He is now indicted on suspicion of, among other things, violations of the Radiation Protection Act, illegal possession of chemical weapons and military equipment crimes.
In May 2011, he writes enthusiastically on his blog: "My project is to build a working nuclear reactor. Not to gain electricity, just for fun and to see if it's possible to split atoms at home.”
In July, the authorities become aware of his experimentation when he writes to the Radiation Safety Authority to make sure that he is not engaging in any illegalities."
Den 33-årige mannen från Ängelholm ”är väldigt intresserad av kärnfysik och strålning”. Men experimentet med en kärnreaktor hemma på köksspisen gick snett. Nu står han åtalad misstänkt för bland annat brott mot strålskyddslagen, olovlig befattning med kemiska vapen och krigsmaterielbrott.
www.svt.se