epp foam super glue activator

In anticipation thanks for the answers to the question.

can you just stick epp foam together with CA or must you use an Activator first ?If you do and Im sure you do where do you spray it.On both pieces of foam ?Also if foam to plastic do you need Activator?

tell you guys what,this forum is a Godsend.

john

You dont need to use activater but it helps as cyno takes forever to go off on epp

If you use it glue one surface spray activater/kicker on the other then press together after a slight hiss joint will be solid

M

I would use a different adhesive all together on EPP. The problem (I find) with CA on EPP, is that when it eventually cures, it is a very brittle glue joint. As you probably know, EPP flexes and bends very well (which is what makes it so good for aircraft, eh Barnesy? It bounces soooo well! heh heh ). Anyway, this means that the joint will eventually start to crumble, and come adrift.

I find it much better using a flexible adhesive, that can bend and flex with the EPP. Evostik (contact adhesive) is REALLY good for joining wing cores together where the join covers a large area, and zap-a-dap-a-goo (thick rubbery stuff, Steve Webbs stock it) is really good for gluing servos, horns, motor mounts and stuff in. Both give a glue joint that is really strong on EPP, and bounces really well too.

Cheers
Andy

further to Andys comment i tend to use uho-pour for all the big bits and cyno for horns hinges and repaires

M

Aye, the POR glue is a good alternative to contact adhesive, it's less smelly for a start! That said, you can't beat a bit of solvent up your nose

Andy

tell you what Mark when my Blade Dancer if finished,made from EPP foam Ill let you do a

Crash flight on it or should that be Test flight:lol:

ps can you buy Activator for CA local or must you go to the Model shop

Also, some activators are not foam friendly ( as are some CA )
For quick repairs, a hot glue gun works OK too, but does tend to pile the weight on if you dont watch it.

activators are fine on epp its ploystyerene that they eat

if you pop into roger jones they have it in an aerosol, thorncliffe might as well

didnt know Rogers had it thats good to know

I think it's about £6 they do it in packs with cyno or on it's own, the double glazing lads use it for the plastic

The fella with the rc car shop on the end of the Rhuddlan straight also stocks Zap a dap a goo.