As the education part of your project, may I suggest that you use a couple of pieces of .020 thick (or something close) scrap material and try it your self and see how it works.
This is not at all meant as a flame because you asked the question... just pointing out that in this age of the internet, it seems many of us builders don't do as much thinking for themselves as they used too.
It is my opinion that a lot of the info and advice passed along in these online forums is bad advice. As builders we need to think for our selves and "test" any advice provided by others (also not meant as a flame towards the guys that took the time to answer your question).
In answering your question...I agree with the other guys, that it will dimple just fine. If the two pieces of material were .032 thick it would not dimple as well but would still be acceptable. (but don't take my word for it

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