Harvest Moon: Back To Nature Tools

This section outlines the 5 main tools that you have to work with to get
your farm into working condition, and keep it that way.  Listed is their
overall function, then their effects at each power level.  Note that the
power level of your tools cannot be properly accessed until you've upgraded
them at the blacksmith's shop via the appropriate ore, even if your tool's
percentage is high enough for a power level.

Sickle - Cuts down grass, crops, weeds, etc.
 Normal - Cuts 1 square of grass in front of you.
 Copper - Cuts 1x3 squares of grass in front of you at max power.
 Silver - Cuts 2x3 squares of grass around you at max power.
 Gold - Cuts 3x3 squares of grass around you at max power.
 Mystrile - Cuts 5x5 squares of grass around you at max power.

Hoe - Plows earth.  Can also be used to revert light-green grass to
untilled soil.
 Normal - Plows 1 square of land in front of you.
 Copper - Plows 2 squares of land in front of you at max power.
 Silver - Plows 3 squares of land in front of you at max power.
 Gold - Plows 4 squares of land in front of you at max power.
 Mystrile - Plows 6 squares of land in front of you at max power.

Axe - Cuts branches and tree stumps.
 Normal - Cuts branches only.
 Copper - Cut down tree stumps in 6 max-power strikes.
 Silver - Cut down tree stumps in 3 max-power strikes.
 Gold - Cut down tree stumps in 2 max-power strikes.
 Msytile - Cut down tree stumps in 1 max-power strike.

Hammer - Breaks stones and broken fences.  It also can be used to unplow
tilled land.
 Normal - Breaks small stones only.
 Copper - Breaks large stones in 4 max-power strikes.
 Silver - Breaks large stones in 2.5 max-power strikes, misshapen rocks in
  4.5 max-power strikes
Gold - Breaks large stones in 1 max-power strike, misshapen rocks in 2.5
 max-power strikes
Mystrile - Breaks large stones in 1 max-power strike, misshapen rocks in
 1 max-power strike

Watering Can - Waters crops.
 Normal - Waters 1 square of land in front of you.
 Copper - Waters 1x3 squares of land in front of you at max power.
 Silver - Waters 2x3 squares of land in front of you at max power.
 Gold - Waters 3x3 squares of land in front of you at max power.
 Mystrile - Waters 5x3 squares of land in front of you at max power.