Thought i share my current progress of the AT-AT armature it has been though 3 revisions to get it here. I have been using Inventor Fusion to design the parts, later to be milled using a CNC machine. As of now all the parts are ruffed out missing few key components until they are finished.
I am using the dimensions taken from Master Replica when they photographed the ATAT. However the depth still needs to be determined, currently using standard thickness in imperial/US units. I will need to confirm this by the few kit parts/plastruct (or evergreen) located on the leg
The thigh plate (expect for the knee is covered by two plates in the front and back) is left blank until more information is found. I have only found some speculation on two ball joints in each leg. It appears to be some object located near the rear due to the hole drilled in the back. I dont believe there are ball joints by what is present, nothing is leading me to believe by what is present