Question

at the 5:20 minute mark, there is a problem with how he is trying to feed the material through the jointer. discuss why this would prevent the board from ever getting straight.

Explanation:

If the material - feeding process is incorrect on a jointer, it can cause uneven cutting. Uneven cutting leads to inconsistent removal of wood from different parts of the board, preventing it from becoming straight.

Answer:

Incorrect material - feeding on a jointer causes uneven cutting, which stops the board from getting straight.