[noiseman]

”I was amazed to later find out how lightly constructed the LEM was, you could probably shove a screwdriver through the hull.”

Yep, I’ve heard the skin was only as thick as several sheets of aluminum foil. Amazing.

[Demiurge2]

That’s what I found odd about the Apollo 13 mission. On the way back, they famously used the LM descent engine to speed up and position the whole Apollo assembly. That meant you had the massive service module and command module on one end (yes, zero gravity, but with lots of mass) and an engine at the bottom of the LM at the other. In between was a light tin can, the LM ascent stage. How did they do that without the LM in between being crushed, or at least distorted?

[Calvin Locke]

I think the descent stage used the stuff now used for emergency blankets for it’s outer “hull”, reflectively protecting the fuel tanks.