Glue/paint issue

[Eloveless]

so when I am gluing parts down with glue designated for plastic models it is rubbing the paint off. So for example when gluing the radiator down it scooted around and the black radiator paint and the body color rubbed off. Why is this? Any suggestions? I know it will be unseen, but hate it happens. 

[Harry P.]

It happens because the solvents in the glue are strong enough to dissolve the paint. Also sounds like maybe you're using too much glue.

[angelo7]

You must remove all paint from parts where glue will be applied, either by sanding or with a blade.  If you don't, the glue will do that and take a lot longer to dry.  I assemble all the parts I can and then and only then I paint them.

[Snake45]

It happens because the solvents in the glue are strong enough to dissolve the paint. Also sounds like maybe you're using too much glue.

WAY too much glue, and the wrong kind.

[Eloveless]

WAY too much glue, and the wrong kind.

I swear I'm using very little. 

[Harry Joy]

That glue is designed to melt plastic parts and weld them together. So yeah, it's going to eat paint. If you are using a solvent glue, you definitely have to glue, then paint.

[Eloveless]

What glue do you recommend? So glue then paint by taping off parts that are different colors?

Edited April 8, 2016 by Eloveless

[Harry Joy]

You have to plan things out a little. Once you've built a few, some things will make more sense. I paint many parts before gluing, but I plan it so it doesn't make a difference. Engines I tend to assemble, then paint. The chassis I'll paint then glue. You have to play around with it a bit. That's with cars, of course. Airplanes, I'll paint the cockpit, assemble that, then assemble the airframe and then paint - the reverse of what I do with cars.

I use two glues primarily - a hot, welding glue (Tamiya Super Thin), and extra-thick CA glues.

[Kit Basher]

Another option is to use epoxy glue. That's what I do when I have to glue painted parts together.