However some models may run much deeper .
Basically the chisel plow is a very heavy duty field cultivator intended to operate at depths from 15 cm ( 6 in ) to as much as 46 cm ( 18 in ) .
Some models may run much deeper .
Basically the chisel plow is a very heavy duty field cultivator intended to operate at depths from 15 cm ( 6 in ) to as much as 46 cm ( 18 in ) .