Sam gave good advise on where to find it . They also use it for shower / bath walls this will only be .25 thick

I have been buying .25 off of eBay . I have a good stock of .5 inch I befriended a guy who works in counter top business,
so I get some cut outs and other stuff they don't want

I make him some templates,signs or what ever else he likes ...
I got a piece of white extruded acrylic, I am going to give it ago as the corian is expensive and hard to get . The corian is real nice doesn't scratch easily,
I am afraid the acrylic will .... you can have reweld problems with corian if spindle to high and feed to slow ...
Have a good day Kent