In A very web site write-up, you mention using a granit tile from a home Centre. If i put that with a wooden surface, by bressing in the midst of that tile I'm able to deflect it by five/one hundred of a mm pretty easely. Making use of SiC ceramic http://waylonmezd386.iamarrows.com/11-faux-pas-that-are-actually-okay-to-make-with-your-silicon-carbide-sandpaper