Signograph 25 MPCNC mount

I was looking for a cheap way to engrave a curved stainless steel plate with my MPCNC an came across the Signograph 25.
I designed this mount so the Signograph can slide up or down following the curved surface of the plate.
If you build this thing I would like to see your results.

parts needed:

4x LM8UU or 2 LM8LUU bearings
2x 8mm rods (109 mm)
6x M4x20 screws
6x M4 lock nuts