ON THIS WIKI
The Grafter is a Forestry tool essential for Arboriculture. It guarantees a 100% sapling drop rate when used to break cross-bred tree leaves. On regular non cross-bred leaves, it has no effect, i.e. the sapling drop rate is the same as it would be normally. The Grafter has a durability of 5. There is also the proven grafter which you can only get from the arborist villager and has more durability then the normal grafter
On its sixth and last use, the Grafter does not have any effect on the leaves and does not guarantee a sapling drop.