/3D/ is barachan's 3D porn content board, it is NOT /req/ and should not be used as /req/ by any user.
Posts here are for 3D content and 3D content only. /3D/ is NOT a board where people look for pic sources on the internet for other users. This rule keeps this board from becoming 99% posts of people asking for "source" rather than a board barachan users go to find /3D/ porn and this rule is clearly outlined on the sticky at the very top of the board which that user clearly ignored which earned him a 3-day ban.
/req/ is the board on barachan where requests for ID are posted.