Jason885

Member

• Aug 30, 2020

• #1

Here's a trick I learned a year or so ago, it's used in the aviation sector for making repairs.
When you are gluing a crack in an object like say dashboard, apply superglue to both sides and or as deep in to the crack as possible, then press the 2 edges together and sprinkle backing soda over the glued crack, a chemical reaction happens and the glue cures instantly and much much stronger than the glue would have on its own. (I have seen this used on light aircrafts.)
Brush off the baking soda and lightly sand down to required finish.

 

Bantam1

Well-Known Member

• Aug 30, 2020

• #2

I do wish i had concentrated more in chemistry in school.
There is a need for some chemical theory here or this has no plausability.
Something to do with polymerisation but we need the full chemical theory and details.

 

Jason885

Member

• Aug 30, 2020

• #3

Don't know what the chemical reaction is but just watched a vid using the same method with baby talkum powder. There are plenty of YouTube vids showing this is anyone is unsure, just search 'superglue hack'.

 

RangeRoller dt

Well-Sprung Member

• Aug 30, 2020

• #4

polymerises the glue but gives off noxious gas
Should be strong though

 

bluedog333

Well-Known Member

• Aug 31, 2020

• #5

I use a mitre bond activator spray for the same affect. Good ‘hack’ though.

 

C

Colthebrummie

Well-Known Member

• Aug 31, 2020

• #6

I would have thought the baking powder simply removes the moisture from the adhesive making it dry faster and harder. Most strong glues contain toluene which reacts slowly with moisture to produce co2 which causes it to cure slower. Mixing it with watered down ammonia turns it to urea which dries like concrete, so hard it's difficult to sand flat.

Col

 

Shippers

Well-Known Member

• Aug 31, 2020

• #7

They use that method to fill chips in helicopter blades...

 

Bobsticle

De Villes Advocaat

• Sep 1, 2020

• #8

I did it on a brand new aluminium radiator a few years ago. I fitted an electric fan that became loose and wore its way through around ten core tubes. Its still fitted and still leak free. I even did it in situe by applying a few drops and flicking the soda on until filled.