A mechanic will probably scold me for this advice, but... pump the tire up to riding pressure, and try to roll it off with all of the force you can with your thumbs. if it comes off, re-glue it. If not, good to go!
Disclaimer; I'm by no means a bike mechanic. I've just glued a few tubulars in my time and this is what I go by.
Edit: in reply to @hma
A mechanic will probably scold me for this advice, but... pump the tire up to riding pressure, and try to roll it off with all of the force you can with your thumbs. if it comes off, re-glue it. If not, good to go!
Disclaimer; I'm by no means a bike mechanic. I've just glued a few tubulars in my time and this is what I go by.
Edit: in reply to @hma