For example , a tapered hand reamer with a clockwise spiral will tend to self feed as it is used , possibly leading to a wedging action and consequent breakage .
The spiral may be clockwise or counter-clockwise depending on usage .
A tapered hand reamer with a clockwise spiral will tend to self feed as it is used , possibly leading to a wedging action and consequent breakage .
The spiral may be clockwise or counter-clockwise depending on usage .