hy leeko a wireless probe may have issues with tilted surfaces: for example if you probe xy plane is ok, but if that plane will be tilted, then the probe may help detecting tilt angle, but not also real touch off positions; in other words, if your surface, for example, is a sine wave, a normal probe won't be accurate, unless for the peaks ( high and low )
a probe that can handle accurately such tilted surfaces is ++$$ compared to a normal one, and/or may need a next level software; thus not only the best, but also some basic probes can do it, but this functionality comes with extra cost; so if you got a normal cnc + a probe, and sudenly you wish to go full 3d, only a software update may be enough
as a conclusion, for complex surfaces, is needed an option, called "cosine vector detection" / "real 3d measurement" / etc, and this option may come as a software update for a normal probe, or toghether with a new probe; this topic is rarely discused, because most in machine measurements are not real3d
this can be done without probes, but a simple dial indicator, or 3d taster can do it : slower, because it can not print data, thus you will need to get data yourselfsurface mapping
a probe does things automaticaly, while with a dial/taster it is required to spent time for touch off, write values, and so on
there is an inbetween method, like using dials/tasters that transmit data, so you only do the touch off, and get data automatically ( from the dial ); it also helps to have a macro that can detect cnc position ( so to get data from the machine also )
for mapping, is needed 3 coodinates :
... dial/taster will deliver only 1 coordinate ( this can be automatized if instrument can transmit data )
... other 2 comes from the machine ( this can be automatized if cnc can transmit data; for example, if your machine is at a random position, can it print that to a file, or to a common variable, etc, and at the end, you should get that file from the machine )
there is a method to avoid the need of getting data from machine; is not like you no longer will need that data, only that you won't be using the machine for this task; is needed an instrument with data transmision: not on request, but continouly; pls check video below
you simply scan your surface at constant speed, then use data to recreate surface inside a pc; for accuracy, you can repeat scaning, or pair cnc speed with instrument accuracy; as you can see, there are solutions, and i think that is possible for you to implement a low cost method that delivers high accuracy for some mapping tasks, this method is way faster than using a probe
last but not least, there are engraving holders that deliver constant depth on uneven surfaces; pls check attached / kindly