Maybe they are thinking of how mugs and thermoses can be labeled “vacuum sealed,” and that the marketing implies that the vacuum between the walls insulates the outer wall (where the hand touches) against the heat.

Yikes, I’m sorry that happened! Have you tried using updog yet?

Dang, I’m getting an error trying to follow the link. Anyone have a mirror/alternate link?

Thank you for these excellent posts!

Libraries welcome you to do it! So definitely don’t feel weird there.