Kind of charming all these people still using little tubes of glue, sort of like the puncture repair equivalent of riding in tweeds. Do you also have the kits with in a tin with the little tiny yellow crayon to mark the hole, and the little block of solid talc and the grater so you can powder the patch and make sure any surplus glue doesn't stIck to the tyre casing? Those were the days, I used to love all that little ritual. Gave it up twenty or more years ago when the first super thin self adhesive patches came out. Find hole, clean up with sandpaper (last remaining bit of the old ritual) peel and stick, lasts the life of the tyre. Never looked back. Can do a Brompton rear in twenty minutes, any other bike in ten fifteen. Never use more than one tube per tyre for its entire life. Can't believe they still sell those old rubber cement kits!