Ron, List, Interesting find. You reported that the silicon carbide meshes for drywall sanding are really just paper meshes coated with silicon carbide.
I was trying to think of other materials that can handle high temperatures and ceramics came to mind. Ceramics are often used in metal casting processes. Aluminum Oxide, or even some sorts of fiberglass have high working temperatures. Ceramics generally have higher emissivity than metals (~ 0.7 I think). It looks like fiberglass meshes are often used to filter molten aluminum and iron for casting operations. Perhaps something like this would have longer lifetimes? Again, cost may become a big issue, but here are 2 that I found: http://www.ecplaza.net/trade-leads-seller/fiberglass-mesh-for-aluminium-filtration--6816138.html http://www.king-in-china.com/productview.asp?id=954 Just throwing a few more ideas out there. -Matt Redmond
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