Cut roughly (4)
(Other definitions for hack that I've seen before include "Cut - mediocre journalist" , "Chop; uninspired writer" , "Break into computer system" , "Writer of uninspiring stuff" , "Cut roughly - routine writer" .)
(Other definitions for hewn that I've seen before include "(Of wood) cut, chopped" , "Cut with blows" , "Hacked" , "Felled" , "Shaped as with an axe" .)