CELKO (9/6/2012)
[ "Granite! Use big hunks of granite!". I would add also: polish it first!
It's cheaper than a screwdriver, and from performance point of view it can be much faster... :hehe:
Polish it? Why? It will just get scratched :-)...
That is a whole point! Get it scratched! Ok, ok, it was sarcasm... :hehe: