Turning pentagons on a lathe

[Toolmaker51]

I'll have to examine my Lyman tumblers (they work well on cartridge cases) to see if import versions utilize original logical mechanics and physics.

Tony, by his nature, wired any classes in practical physics long ago. Such physics are as much visualization as is theory, hypotheses and computation.
There is a sizable population without capability to work those together; yes it's true!

Started watching here in hmt.net; got distracted and it finished. Of course the usual suggestions popped up, so finished in youtube.com.

If there is any proof in the decline of mechanical ability, indolent students, and those unable to follow a clear discussion; it's loud and clear in the comments section.
Wow.
One clearly a type, expecting the professor to show up and do it for him.
Wow again.