In this video we use a $2.33 off the shelf part to make a knob for the relief
valve on the #harborfreight 20-Ton Shop Press. This mod will work on any
hydraulic bottle jack with a 'T' style relief valve. No fabrication required!


00:00 Intro
00:56 Demo
01:20 Reveal
02:11 Examples
03:19 Free option?
03:39 Outro