On Thu, 12 Sep 2013 05:32:49 -0700 (PDT), Michael
wrote:

What kind of material do you prefer? 1/4 inch MDF, polycarbonate, some type of sheet metal?

Thanks.

http://www.youtube.com/watch?v=Ti1o-QKriBM

$7 acrylic plate sold as trivet. Haven't tried it, mine is a Lee
Valley round phenolic plate:

http://www.leevalley.com/US/wood/pag...=1,43000,51208

But that used to cost a whole lot less. Today I'd be looking
elsewhere.