The Whetstone Mod allows normal Stone to rarely drop a new item, the Whetstone. The Whetstone is used to sharpen, or "Hone" an Iron Sword or Iron Axe increasing it’s Damage Output by 1, thus matching that of the Diamond equivalent.
How to obtain:
The Whetstone is a non-craftable tool item that is dropped rarely from stone (default 1 in 1000 chance). It is affected by Fortune and the drop chance may be altered from a Config file: feudalrox_whetstone.
Creative players can find the Whetstone in the Tools tab.