Not sure what this is called but always wanted to build one.
Mix between a handvise and a bench clamp?
Music:
Edge of Eternity by Norma Rockwell
Local Elevator by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300012
Artist: http://incompetech.com/
