Firstly you need teak logs, then you need some gp around 1k (I don't know the price to change from teak log to plank) and then go to lumber yard. (Go to east gate of varrock then go North East) then talk to the dude in the log place and TaDa after you pay him you've got yourself planks (teak) oh and this is members only.
DO NOT
Don't bring the teak logs noted it won't work
Chat with our AI personalities
you can't get free oak planks on runescape now stop being a noob and make them yourself. -.-
Planks are outside of Varrok in the Lumberyard. You have to be a member to SMITH nails.
You can get planks from the grave yard in the wilderness. But if you are a member, get em from the saw mill.
Teak Logs.
The cheapest way to makeoak planks are to chop the oaks yourself and take them to the sawmill. You may also send servants to the sawmill to convert them into planks which is more expensive; Also the Plank Make spell from the Lunar spellbook may be use by players who have completed the Lunar Diplomacy and Dream Mentor quests, and have level 86 Magic. The plank make spell is the quickest way to make planks but the cost of the runes is high.