This vid covers the design and installation of drag chains for both the Langmuir Crossfire XL and XP CNC plasma tables.
Upper mount files:
https://www.dropbox.com/s/a24exhs1del...
https://www.dropbox.com/s/wy6lyv65sr1...
https://www.dropbox.com/s/nrvcl9e5fsn...
https://www.dropbox.com/s/4nk58yfzvnw...