Does this not seem biblically retarded and slightly pointless to anyone else but me?
So you have to pay for a saw blade, then you have to pay for something suitable to cover it with so it doesn't scratch the living hell out of your records...
1. why wouldn't you use that money to buy a decent mat?
2. surely what ever you cover the thing in to stop it being abrasive would in turn effect the sound too?
3. if you're set on making a DIY mat then pick up a sheet of cork. I got a big sheet of 3mm cork for about £4 and made about 6 mats out of it. I've also used a 12" x 12" cork tile which was also 3mm but far more dense. Cost meer pence.
I'd really have to call bull$@!+ on anyone who could tell the difference between the cork or the blade to be honest.