Sawmill operator - OSRS Wiki
The third fastest way to make planks using the Sawmill involves the Gnome Glider system. Use a ring of dueling to teleport to the Duel Arena, run south-west and take the glider to the Grand Tree. From there, take the Glider (run north into and its up at the top of the Grand tree) to Lemanto-Andra, which is south-east of the Digsite in Varrock.