Teak plank

Teak planks are used in the  Construction skill to make moderately high level furniture. Each teak plank gives 90 experience points (so if an item uses two teak planks, players will gain 180  Experience).

Obtaining
Teak planks are made by taking  teak logs to the  sawmillnortheast of  Varrock and asking the sawmill operator to convert the logs into planks, at the cost of 500 coins per teak plank. Players can send their  servant to the sawmill, but it will still cost the 500 coins per plank.

In Construction
Teak planks can be used for  Construction training. Pieces of furniture between level 35 and 65 often require teak planks to be built. Teak is expensive though, so buying loads of teak planks to train is uncommon. If teak planks are used, people usually make flat-packs of  teak chairs and then eventually,  teak dining tables, which is a popular way of levelling  Construction. Each teak plank is worth 90 Construction experience, so the maximum experience per inventory available is 2160 for 6 dining tables.