Machinist's jack - videos

Machinist's jack. By Workshopfriend.

20:15 video:
https://www.youtube.com/watch?v=1IfugVRAdbc

17:46 video:
https://www.youtube.com/watch?v=zqJdwXLzqyc

Part 3. By Workshopfriend. 23:14 video:

https://www.youtube.com/watch?v=tlfntZL3zAI