I tried the search, no luck. I tried an internet search, too confusing….

I want to make an outdoor sign with a router, painted, 1” thick or so. The sign would be maybe 12” x 24” or so. My neighbor has one and it definitely isn’t wood. It is about as heavy as wood. On the internet I came up with HdU, whatever that is.

So what do people use, and just as important, where can I buy it? I don’t mind if I had to buy more or a bigger sheet, it will get used.