Top thickness around controls cavity
This is my first post in the LC, although I've been lurking here for a bit reading just about every thread that I can. I'm very new to building (still haven't finished my first from-lumber bass) but already have a few builds at various stages of planning and design, including sourcing the wood.
Recently I've been looking a lot more at figured tops and a question has popped into my mind that I didn't immediately remember reading an answer to from one build thread or another:
Is there some rule of thumb about how thin a top should be, especially relating to strength around the control cavity? Obviously it must be thin enough that the pots can extend through. But how thin is too thin? Are there some commonly used ways to reinforce the top in this area (something like a veneer layer under the top)?
It seems that bookmatched tops are typically sold in a thickness of about 0.25" (or thinner). Should I avoid buying tops that are thinner than this?
I imagine the answer would change based on the specific wood in question, I am just curious what a good thickness to shoot for would be.