discussion Etch Help please.....

[adt70hk]

Used the activator for years before I returned to modelling, it was the go to thing to use after fixing a cornice in Kitchens and Bedrooms, never had any problems with it being weaker , also used it it in joinery with out any mishaps. If it makes the bond weaker why recommend it, it would soon be with drawn if professional users complained .


Cyanoacrylate (CA glue) is made out of 91% ethyl 2-cyanoacrylate (ECA), 9% polymethacrylate, <0.5% hydroquinone, and a hint of natural sulfonic corrosive. More tender pastes are usually nearer to 100% unadulterated ECA.

CA glue is reactive, which is the reason the stabilizer remains in a fluid state. It sticks the second that moisture deactivates its stabilizers, and the bond starts to polymerize in lasting security.

The bonding reaction is consolidated by a water fume on the outside of two substrates. The quicker the glue is caught between these two surfaces, the faster it activates. The equivalent goes for moisture – the more damp the substrate is, the quicker the super glue will activate it.

Since curing begins at the surface and moves toward the middle, thick creases or huge dabs of the paste may solidify gradually or not in any way. Maintain a strategic distance from wrinkles thicker than.25mm if you need protected security.

CA glue’s quickening agents are ordinarily CH3)2CO based, utilizing CH3)2CO is the essential dissipating specialist. This implies that once applied, the CH3)2CO vanishes leaving a functioning quicke

Thanks John for the info.... Not that I understood most of it to my shame...... Will have a proper read through again when I get a moment.

 

[Guest]

Wow, every day is a school day John……I thought it set in the absence of air and the presence of moisture. Perhaps I’ve confused it with locktite bearing retainer? I’m also surprised it’s used that much use in kitchen fitting to be honest. My experience is that CA doesn’t have much in the way of sheer strength, unlike alternatives such as epoxy.

Used for none load bearing jobs Tim, such as the corners on mouldings because of the speed it sets at. Don't know anything about Locktite.

 

[rtfoe]

Well CA works on tensil strength so its not easy to pull apart but the joint can easily be separated if twisted. Very good for closing wounds that don't hold together.

Cheers,
Richard

 

[The Smythe Meister]

Well Guys.......
What a fantastic response,thanks to ALL who made their suggestions and offered their advice:thumb2:,
I`ll be writing all hints and tips into a "Little Black Book" for reference,i think your input will also come in handy for many others on the site too...... so it`s win-win!
Cheers all,
Andy (Now setting off to Super Glue some brass to my fingers!! :tears-of-joy::tears-of-joy