Man in dota 1 i came back from a 2 v 5 with most rax gone with a battlefury ogre <| sep |> Use a sharp chisel . Mark out the width of the groove with a pensil and inscribe a deep line , to make a stop cut on the far side , using either a knife or a chisel . If using a knife , register against a staight edge and make several light passes before going strong . Otherwise the grain will take your knife off your guide line . Chop out the groove with the chisel by taking cross grain slices . Go slowly . Take only small bits at a time , moving aross the whole width , and starting at the far end moving progressively back toward the near end . Creep up on your desired depth . Check your depth constantly , and deepen the stop cut after each pass . Remember to work slowly and deliberately , moving farther and farther back , by only taking small pieces out each time . Hope this helps .