Tunnel-grinderCanonLegendsInfinitiesTunnel-grinders were automated vehicles used to clean the sewers of Thyferra at the time of the Stark Hyperspace War. AppearancesStar Wars (1998) 37 (First appearance) (In flashback(s)) (Unknown)Unknown UnknownNoneStar Wars (1998) 38 (In flashback(s)) (Unknown)Unknown UnknownNone