Eli5 Why is it so hard to glue something with superglue, while it instantly glues my fingers, it’s bottle, anything it drips on instantly?
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Your fingers are an ideal surface for superglue, they are pliant so you get a good contact patch, they are textured and most importantly for superglue they are slightly moist.
Superglue doesn’t set from “drying out” it sets from exposure to moisture.
Whereas the most common thing people try to repair with superglue is glass and ceramics which is one of the toughest asks. The surface is extremely hard and non-porous, the breaks tend to be smooth surfaced and getting both surfaces to sit flush is hard to achieve.
Moistening the surface can help as well as roughing.
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