at the risk of wasting my time trying to tell a english speaking foreigner anything. ie a yank. putty is putty glazing is glass. if a manufacturer wishes to use advert freedom , it does not make kitkat cordonblue. so shove it up ur arse. now if yo desire advise it is this. use silocone, if you prefer traditional, buy lime + boiled linseed oil mix to a doe, wullar you have putty, sorry , glazing putty.. i know you yanks are on the ball with technical stuff , but putty requires a certain level of skill. like someone else said give them a beer and look and learn.