I just saw in the review a question about a stun gun electric circuit which can deliver 20kV. Does the website has any guidance regarding potentially lethal circuits that the main point is to be a weapon? Also, are these questions under the authority of government concerning weapons export rules?
No answer in almost a week... It seems nobody really knows what is the policy on this.
I think it is because there is actually no clear policy. A previous relevant discussion here on meta also showed there were no official guidelines on this matter, although the general consensus seemed to be "there should be no restrictions".
I also personally think that there should be no restrictions on questions asked, as long as answering them is legal (the only exception I know of being building bombs).
Moreover, I am quite confident that export rules restrictions here are irrelevant. These rules control hardware, softwares in a few cases (mainly cryptographic software), but I'm pretty sure they don't apply to simple information like what we're sharing on this site. Exporting from where anyway? The servers location? The poster's location?
So I don't see any reason to rule out these questions, and if anyone had such reasons in mind, I think he would have made a post here already. So we can certainly consider anyone is free to ask how to make his stun gun even more lethal, how to switch the high voltage for his DIY electric chair, ... (as long as the question is well-asked and not too broad).
Now, anyone is also free not to answer, and I certainly won't, as I don't value much these devices and their use.