hi anbody have a wood record mat ?

The Teres wood platter is an exceptional idea and a real world product, but it is several inches thick and very heavily finished to negate any possible problem with warpage. Probably that has a better chance of success than would a much thinner wooden mat, but it's certainly not crazy to try it.  The temptation would be to use a hardwood to avoid warpage, but that might result in a "hard" sound.  Like I said, the choice of wood species will make a great difference in the outcome, in my opinion.  The thing is, if you make the mat yourself with your own hands, you're gonna love it.  Be careful of expectation bias.  I had a machinist make me a pure copper mat for my Kenwood L07D, to replace the OEM stainless steel "platter sheet" (a mat by another name), and of course, I love it.

Rocky 
did you engineer a central depression to allow for the label area? What species of wood? Geoff’s point about warpage is a good one.

The poor OP asked about a WOODEN record mat and so far I see not one relevant response.(Cork is not what he meant.) I’ve never seen or heard of a solid wood mat but it’s an interesting idea. Is there even a commercially made example? Perhaps the OP can say exactly what product he’s considering. If one wanted to go that way, the next endless question would be: what kind of wood? That subject alone should engender at least 100 responses.