Sap

Tree Sap is a collectible material item which was added in v0.08 to The Forest.

Gameplay
Sap can be gathered from trees that yield logs by striking them or by collecting them from a built Sap Collector. Sap is used to upgrade different weapons by acting as a binding agent to hold certain materials to the weapon, such as feathers or teeth. Prior to update 0.53, it was used to repair structures. It is a primary ingredient used in permanent weapon upgrades.

The chances of receiving sap while cutting a tree down is based on chance. Weapons that are poor at cutting trees are often the best such as the machete. Though Sap Collectors are a far better method for harvesting sap. Only axe type weapons that cut trees can harvest sap.

Crafting
1 Sap = 1 block of repair on a structure if you do not have the Repair Tool

Trivia

 * Sap use to be used in crafting blue paint and orange paint, however both paints were removed in v1.0.