Quote Originally Posted by owen moore View Post
The gear rack is only used when you are turning the hand wheel on the side of the apron to traverse the entire carriage assembly manually.
Thank you for the response
What had puzzled me was that there is the option to select power to the leadscrew or to the rack, two ways to move the apron under power. From the earlier replies it seems that the powered rack option is to save wear n tear on the leadscrew when not threading. Understandable but seemed a bit redundant. Happy building n doing
Eric