im wanting to silicone a fhz but i want to do it on something else first i have a mosquito wud doing it on that be similar to the fhz

The recesses (that I don’t think even exist) on those yoyos are very much too shallow for silicone to hold for more than a few throws. You’ll need to get them recessed before you do any siliconing, unless you’re fine with re-siliconing after 2 or 3 throws.

Would recessing a mosquito be similar to a fhz?

It would be the exact same.

the depth and all?

It seems to me that this question got answered before.