After many months or reading and researching I am finally ready to start building a plasma table. So here are the specs.
48.5"X48.5" travel
water tank
369oz steppers
dual drives on the y
Gecko 201 stepper controllers
20 degree 20 pitch rack and pinion
3.75:1 gear reduction
Hiwin 15mm LG rails on the Y and Z
THK HSR25mm rail on the x
CandCNC Digital THC
Mach 3 control.
Hypertherm 1000
The Table will be made from 3x3x.125 square tube so I started milling the cross pieces for the table square and held .001 on length.
Then I started drilling and tapping the holes for the 25mm rail for the gantry.
Next I started on the Z. The Z is .188 HR plate and 15mm Hiwin rails. It will have 6" of travel. The single rail will be used for the floating head for the torch.