Grain direction is the first language of hand tools. The tool talks to the wood
and the wood talks back through the grain, and if you do not speak the
language you lose a finger or a thousand shavings.
The language
Grain runs downhill. A plane shaving away from the high end takes a shaving
like silk. A plane running toward the high end catches and tears and the
shaving comes out like shattered glass.
What the eye tells you
Wood grain in a photograph is a picture of something. Wood grain on the board
in front of you is a thing you touch and read with your hand before your eye
even says hello.
Run your hand along a piece and the direction jumps out. The board that looks
one direction under the light might run the opposite way to the hand.
The test
Close your eyes. Touch the board with the flat of your palm, moving in one
direction. Reverse. The direction that feels smooth is the way the shaving
will come. The direction that feels like teeth is the way the tool will tear.
The hand plane
A 45-degree angle to the grain, approaching from the high side, taking shavings
so thin they are translucent. This is the moment where hand tools stop being
frustrating and start being a dance between your hand and the wood.
The power tool cannot do this. It runs at one speed and one angle and if the
grain is backward it destroys the wood or your hand.
The lesson
Before power tools, before techniques, before watching videos: learn to see
grain by touching it. Learn to plane against the grain on purpose so you
understand what you are avoiding. Make a board with terrible grain direction
your first project. The board teaches.
Seeing starts with touching.