Would questions about using an everyday object (that wouldn't normally be considered a weapon) as a weapon be on topic for Weapons?
I would think it's off topic, but want to clarify.
(Edited to remove bad example)
Maybe. The scope is not settled enough yet. This is the kind of thing that gets brought up in meta, even several years later on a small public beta, when there is enough growth in the community to make the discussion necessary. Until then, it's probably best handled on a case-by-case basis subject to the usual criteria.
Remember, if it turns to be an undesired question (regardless of actual quality), it can always be locked or closed later by the community at the time.
Example questions were list-requests, and the second further requested subjective answers.
Both would probably be closed as too broad and the second would also be closed as primarily opinion-based, on the current Stack Exchange sites I am active on.
I would expect any proposal site to do similarly, to avoid going outside the operative philosophy of Stack Exchange.
However, specifying them further may help avoid this,
instead of how can [X] do [Y]?, give a particular case of X actually doing Y, and ask about its history or mechanism or such aspects
instead of asking what is the best [thing type]?, give some examples of those things and ask about objective methods for comparing them, or about objective evidence whether a particular thing is or is not effective.
Most certainly, saying that crafting weapons is not related to weapons would introduce a multitude of scope issues and endless meta threads...
Weapon is a thing to kill it can be made in professional factory as well as in can be made in my garage... excluding them by place of production then would require to throw away pretty much all historic weapons... so it must be in scope...
Brick could be used as weapon but wouldn't count as a such though...
Kitchen knife would and so would kitchen knife on a stick... I am not sure what sort of intelligent question one would be able to come up with though...
Should I go hunting bears with scythe or kitchen knife should suffice ... or
can hammer be used as a weapon or is it only to hit nails on the head? wouldn't be the best questions ever and would get closed for being to broad...