Runescape Plank Making for Profit

Plank making can be a very good source for money, and can easily be done without buying logs. Oaks are the best for money making, and there are numerous trees near the sawmill. You have the choice to cut the logs, make them into planks, and bank; cut 500-1000 logs, then run planks; or buy logs.
Requirements-
-500-1000 oak logs to start; or cut them as you go.
-100k+ cash
-Super Energy Potions; If you do not want to wait for run energy to regenerate
-Varrock Teleport Runes; cuts down run time
Directions-
Once you have all the materials, you need to go to Varrock East bank, near the runes shop. Once you have you Rs Money and logs, walk outside of the gates, head north along the grey path until you reach a brown path. Then head north on the brown path.
Making the Planks-
Once you have arrived at the sawmill, you want to click on the sawmill operator in the little booth and press the Buy Planks option. Click on the planks you want to make, in this case oak, and right click to press buy all. This will make you a full invontory of planks. Walk or run back to the bank, and repeat!

Other Information-
Making oak logs, I found myself doing about 25 trips an hour, which is 600 oak planks.
25 trips * 24 planks per trip * 420gp= 252k an hour

Item................Cost to make..........Log needed
-----------------------------------------------
Plank...............100 each.................Logs
Oak plank.........250 each.................Oak logs
Teak plank........500 each.................Teak logs
Mahogany plank.1,500 each..............Mahogany logs
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