working with resin?

[Parrot]

How do you glue resin building pieces together?  I washed them in warm water with soap, and then tried to glue them together, but it doesn't seem to work.  I am trying to use a bottle of LocTite Gel Control glue, but it doesn't seem to hold at all, am I using the wrong type of glue?  Am i just not waiting long enough?  There just seems to be no connection at all. 

[Codsticker]

I just used Gorilla Super glue. If it is a larger piece then 5 minute epoxy stabilised with clamps or rubber bands should work.

[FifteensAway]

I stick with two-part epoxy, usually the five minute variety.  Resin to resin is plastic to plastic so you must use an appropriate glue (not familiar with the one you are using).  The usual way of bonding plastic to plastic is to actually affect the molecular structure so it stays together in chemical bond.  Thus both super glue and even epoxy are not going to provide permanent bonds.  But epoxy works pretty good within my experience.

[OSHIROmodels]

Don’t use gel superglue, use the thinner variety but make sure you know how the pieces are going to be positioned first.

Epoxy will work as well of course but personal experience leads me to say to only use it on large contact surfaces (couple of inches or bigger).

Resin to resin is plastic to plastic so you must use an appropriate glue

No, it really isn’t. With gluing plastic it’s best to use solvent based adhesives, this just wont work on resin.

[Drunkendwarf]

Roughen the glue surfaces up with sandpaper (this is what I do....).

DJ

[Lord Raglan]

As above, but I also use a super glue activator which ensures it sets in seconds.

[FifteensAway]

Resin is a type of plastic - though there are many types of plastic.  Wasn't sure how solvent glues would work on the normal hobby type resin products.  Which is why I use epoxy.

[snitcythedog]

I agree with many of the suggestions her like sanding the surfaces to roughen them up, using thin superglue vs gel and using two part epoxy resin on the big bits. Pinning as with metals also helps.  If the problem persists it could be a case of the resin not being fully cured (read poorly mixed and partially set) leaching some oils out of the surface.  In the past I have also had some success cleaning the surfaces with alcohol to get a good bond on parts that refuse to set properly.