Plank Make is a Lunar spell that converts logs from the caster's inventory into planks. Instead of going to the sawmill, this spell allows planks to be made for 70% of the normal coin cost per log. However, the cost of runes must be accounted for when considering the total cost of this method.

Plank Make is a common method of training Magic, giving experience faster than High Level Alchemy. This spell should be used at a bank, as it must be cast on logs directly and therefore banking will be necessary for any significant amount of casts. It takes 3 game ticks (1.8 seconds) per cast, allowing for about 1,850 casts per hour. The experience rate is roughly 166k per hour.

A Magic level of 86 is required to cast this spell, giving 90 experience. It requires 1 Nature rune, 2 Astral runes, and 15 Earth runes to cast.