here's an idea, i know it's a bit of work. stamp your words on the plate with versamark and emboss. flip over and cover the bottom of the plate with contact paper and cut out words with craft knife. it's up to you what you do at that point, but i would use glass etching cream.
forgot to add that after you're done you can flake/chip off the embossing. then you'd have a completely washable plate!