When sourcing a wood working planer, you must prioritize the motor power (typically 1.5HP to 5HP) to ensure it can handle hardwoods without stalling. The cutting width and depth are critical; industrial standards usually require a width of 12 to 20 inches and a maximum cutting depth of 1/8 inch per pass. Additionally, look for machines equipped with a helical or spiral cutterhead rather than straight blades, as they significantly reduce noise, improve surface finish, and lower long-term maintenance costs due to indexable carbide inserts.