I made one a couple years ago before I got my P-25 that came with one.I bought a piece of thick black felt in the hobby dept at Wallyword.I took the platter off my old table and traced its outside diameter onto the felt.Cut,punch a center hole and thats it.88 cents.You can buy the same thng mail order for $8-10.Watch out for those ring mats.I tried one on my Music Hall amd P-25 with no improvement.Its has to be one of the BIGGEST RIPOFFS in high-end land EVER!! Maybe some have had improvement with them but 80 bucks for some paper and a little cork and glue?? The packaging is real nice and obviously costs more than the mat for them to manufacture. Mike Fremer remarked about the ringmat"it may change the sound of your table,but maybe not fot the better.