Marshalltown, one of the better brands, makes left handed trowels. I am sure you can find a tile distributer in your area that sells them. I am also left handed and have tried left handed trowels. The problem is that I am so used to using a right handed trowel that a left handed one feels awkward. Yes, I use the trowel upside down, probably the same way you do!
Michael Prachniak - Expert Tile and Stone Consultant and Writer, Owner - Tile Productions
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