Forger's workshop? (6)
I believe the answer is:
smithy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">forger's workshop?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for smithy that I've seen before include "Blacksmith's workplace" , "work area" , "Where 3s were made and fitted" , "Forger's workshop" , "Workplace for forging metal" .)