22:14

Snap Part 1

34:19

Set Your Standards And Never Settle, Part One

46:10

Making it an A pulley

37:59

Dropped A Leg

27:04

Put A Head On Your Thread

21:05

Reventing Part One

19:53

The True Story of Cast Steel (Was Bessemer a liar?)

11:13

Modifying (shortening) a Ballnut