Originally Posted by va_carpenter
The instructions call for a 1" wide, 6" long, 4" deep mortise. Do you drill a series of holes to accomplish this?
Yes, and it will be easier to drill if the door is only solid in the area of the lock and then hollow.
You may want to buy/make a drilling fixture because you don't have a whole lot of room for error in the drilling axis being parallel to the plane of the door.
Also look into a rotary drum rasp for cleaning up the hole.
A door holder, which looks like an upside down V with a slot to hold the door vertically with the long edge against the floor, comes in handy. You can make it with 1x2s and line the slot with cardboard so you don't mar the door surface.