Posted by Dan McEachern on June 27, 2008 at 20:06:27:
In Reply to: Hobbed Pinion Gear teeth not parallel to axis posted by Shrikant on June 27, 2008 at 01:44:17:
A dull hob will tend to push the blank if it is not clamped tightly on the work arbor, adding a slight helix to the teeth.