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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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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9 Answers

Anonymous 0 Comments

There are activator sprays that help faster cure times for super glues that make similar reaction as your hands happen on other surfaces.

Anonymous 0 Comments

To an extent the surface matters. Your fingers are very textured, giving it lots of surface area and nooks to cling to, and it’s a bit warm to help the solvent flash off quicker on top of that.

It also doesn’t have to cure all that well, be in perfect alignment or anything else to be annoyingly stuck for that purpose. Any glob will do.

Anonymous 0 Comments

To an extent the surface matters. Your fingers are very textured, giving it lots of surface area and nooks to cling to, and it’s a bit warm to help the solvent flash off quicker on top of that.

It also doesn’t have to cure all that well, be in perfect alignment or anything else to be annoyingly stuck for that purpose. Any glob will do.

Anonymous 0 Comments

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.

Anonymous 0 Comments

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.

Anonymous 0 Comments

There are activator sprays that help faster cure times for super glues that make similar reaction as your hands happen on other surfaces.

Anonymous 0 Comments

There are activator sprays that help faster cure times for super glues that make similar reaction as your hands happen on other surfaces.

Anonymous 0 Comments

To an extent the surface matters. Your fingers are very textured, giving it lots of surface area and nooks to cling to, and it’s a bit warm to help the solvent flash off quicker on top of that.

It also doesn’t have to cure all that well, be in perfect alignment or anything else to be annoyingly stuck for that purpose. Any glob will do.

Anonymous 0 Comments

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.