Now the Z drive assembly I used 16mm linear bearings and shafts for the guides on this axis. I bought then from Ebay I bought a 30” shaft a cut it to length 2 long linear bearing (scs16luu) and 4 end supports. I used 3/8” aluminum plates one it mounted to the Y slider and the other moves up/down and the floating head is attached to it. I used a ½” acme threaded rod and a plastic lead screw nut coupled to the motor for drive. Be sure the assemble moves 90 degrees from the table and the Y axis so the torch cuts straight. Shown in the picture is the limit/home switch.
Everlast PM256
Millermatic 180
Hypertherm PowerMax 65 with machine torch
Longevity Force Cut 80I
DIY CNC table for plasma/routing
13" metal lathe
Small Mill
ect, ect.