Want this question answered?
I do.
Yes
Check with Martin for an owner's manual. Unless a fireplace is specifically rated as multi-fuel, a gas fireplace cannot safely burn wood.
No, it is not safe to burn. It is toxic.
Yes.
No. It's illegal.
yes
yes
Its wood isn't it
Yes.
quite good to burn indeed!
Plywood is typically made from pine products (and glue) that really can be bad for your fireplace. The tar builds up and can lead to what is called a "flue" fire. Flue fires have been responsible for starting fires and burning homes.