I'm not sure how much it will cost you to have it planed - I do know I'd
never put it through my own surface planer unless I was ready to throw the
knives away (or resharpen them right away).
Why don't you just modify the design by 1/16" and face glue a 3/4" piece to
a 1/2" piece? I have seen 1/4" MDF before, too, but that won't really help
you for this application.
If you can't/won't modify the design, then could you get away with
sandwiching a piece of 1/16" wood between the two MDF sheets?
There are no stupid questions.
There are a LOT of inquisitive idiots.
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