On Thu, 22 Oct 2009 19:04:53 -0700, Oren wrote:

On Thu, 22 Oct 2009 16:06:11 -0700 (PDT), RicodJour
wrote:

All tile has some warpage from
the firing and drying.

One day it was explained to me the not all tile is square and grout
lines may get crooked (?). The guy stacked numerous tiles and aligned
them like a deck of cards. Sure enough the difference was obvious.

He showed the mark/stamps (not all tile is the same) and said if you
orient the tile with the mark/stamp in the same way you will avoid
poor lines for the grout.

Anyway, it was interesting to me.

Interesting to me too. Thanks.