This is print-in-place, the pockets needs to be colored before printing. Add both left and right piece and print as one object with two parts.
If you want other text, please use attached FreeCAD ‘FCStd’ file and update text, then export as STL and add color, then print.
It is printed face down so using Engineering plate gives a nice structure to surface .
In my print I used fluorescent filament so text glows in dark, in case signs are used in primitive conditions where power failures are frequent. Or just because it is very cool :-)
The author remixed this model.