After completion of one or two teeth, the blank and cutter stop feeding and the cutter is withdrawn and indexed back again to its starting position, thus allowing a short rack cutter of a practical length to be utilized. Cutter is once again fed back again to depth and cycle is repeated. Amount of teeth is controlled by the machine gearing, and pitch and pressure position by the rack cutter. This method can be used for generation of exterior spur gears, being preferably suited for gear rack for Machine Tool Industry china cutting large, dual helical gears. For making helical the teeth, the cutter slides are inclined at the gear tooth helix angle.
The hob is fed into the gear blank to the correct depth and the two are rotated together as if in mesh. The teeth of the hob cut into the function piece in successive purchase and each in a slightly different position. Each hob tooth cuts its own profile based on the form of cutter , but the accumulation of these straight cuts creates a curved form of the gear teeth, therefore the name generating procedure. One rotation of the work completes the reducing upto certain depth upto which hob is fed unless the gear has a wide face.

This methodis specifically adopted to cutting large teeth which are difficult to cut by formed cutter, and to cut bevel-gear teeth. It isn’t widely used at present.
In gear planing process, the cutter contains accurate involute rack which reciprocates across the face of the blank and the blank rotates in the correct relationship to the longitudinal motion of the cutter as if both roll with each other as a rack and pinion. At first the cutter is usually fed into complete tooth depth with cutter reciprocating and blank stationary. Involute shape is produced as the blank rotates and involute rack cutter feeds longitudinally.

In the other technique, both roughening and completing cuts are taken with single pointed tools. The use of the formed tool for finishing is certainly impracticable for the bigger pitches which are completed by an individual pointed tool. The number of cuts required depends upon how big is the tooth, amount of stock to be removed, and the type of material.