Way too much work for me!
All glasses are not the same, so you would have to have a number of different templates. Same goes for inscriptions with different numbers of lines of text.
I guess you could do it that quickly if you have dedicated workshop areas for exposing, washing out, etc., but I don't, so can't come near to your time of 15 minutes.
Enjoyed your great informative post though. Thanks!!

Hi Bill,

Thank you for sharing. I use this technique on one-of-a-kind larger pieces as well, primarilly because I want it to look it's best and am able to charge for the extra time it takes.

Our steps are very similar, only I don't turn the item upside down. I have made a bracket (similar to an upside down T) that I can slide my dry erase marker up and down for marking. With a ruler this lets me jot down the height I drew my lines at so when I apply the resist its at the same exact location. I agree with you on the look. I'm looking into using a laser for 'cutting' my resist on some large flat orders I do, but I will still sandblast them. For flutes, bottles, etc. I have a old cylindical engraver with a diamond cutter - to me that this is the quickest way to do flutes/wine glasses. I can have a set done in about the same amount of time it takes the computer to boot up. Cutting with the diamond gives such a nice cut that I'm able to offer many color fill choices.

Zona