There is a very good doc on Netflix, Cave of Bones, that presents their findings and provides extensive footage of how the deepest chamber is accessed. They make passing reference to sceptical responses. My impression is that we are watching the usual and appropriate give and take of researchers...
Hi, DaveC,
A million years ago (give or take) I made architectural models and had to do this very often. We used rigid urethane foam. It’s available in different densities. We used lighter foam for smoothed contours, heavier if left stepped. Doing this by hand is tedious and very messy-a lot...
These motors, known as ‘can’ motors, are very standardized. They are categorized by size and voltage. Measure the old motor and determine the likely voltage by counting the batteries. The trick will be reconnecting the new motor-some soldering will likely be required.