Portable line boring machine. By Snowball Engineering.
10:10 video:
https://www.youtube.com/watch?v=BLyA5zdhSeg
23:07 video:
https://www.youtube.com/watch?v=2_I-h2JxAjs
28:27 video:
https://www.youtube.com/watch?v=4cmd-vP6kWY
41:53 video:
https://www.youtube.com/watch?v=bKkIsBywdso
