As pledged, I have made the remix. Caveat: I am still printing it, so consider it a work in progress for now. Here’s a local link, which contains an external link to the downloadable STL files:
LowRider v3 plasma CNC - Drag Chain Mount revised for large 20x40 drag chain (v1.1)
PS: Here’s a rough first glimpse of my LR3 plasma CNC table. There is not to be a control box like on my LR3 router table, because this plasma table is to be controlled by a laptop with touchscreen.