How can I mark Teflon blocks uniquely and enhance the legibility of the letters?
Use a colored marker pen and color the blocks over and around the letters. The color generally does not penetrate the letters but does color the surface. After allowing time to dry, thoroughly wipe the surface thereby removing some of the color. This usually results in a faint coloration that contrasts with the white of the letters making them more legible. This color will remain through several washes and should facilitate reading the letters. Another advantage is that if you use different colors for each block you have also quickly identified the correct bars for each set if they get mixed during washing.
