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I glued together some plastic war walkers and then realised that I forgot to add some parts. Is there any way to unglue the parts? I used GW super glue, not the plastic glue. The glue is set wrong to use the debonding stuff.

You should be able to just snap them apart with your hands. I hear that if you put the models in the fridge/freezer beforehand, it makes the glue more brittle.

It's a good thing you didn't use plastic glue though, as that physically fuses the parts together.

there's a superglue deactivator i use, i bought it at a rc plane and car store, along with my gap filling super glue. it's made by a company called "Zap-a-Gap" check it out

Yeah DON'T SNAP THEM APART!!
Dreadnote, major foul man, don't snap your models! And don't advise others to snap theirs!

Go buy superglue debonder, it's sold pretty much everywhere that sells superglue. It's not expensive and it's far less likely to ruin your models.

What can I say, I usually superglue metals

Use fingernail polish remover to dissolve superglue.

Won't nail polish remover mess with plastic models, though? Or is there some sort of non-acetone version that attacks CA glue and not polystyrene?

Acetone won't hurt the plastic.

Really? I've heard differently. Time to grab a piece of sprue and see if my girlfriend has any to experiment with...

Before doing anything - stick them in the freezer.
If the bond is just slightly crappy, the cold will help make the superglue fragile.

I worked injection molding for quite a long time and believe it or not acetal (original material used in acetone) is used in producing many kinds of plastics. Therefore i dont think that it could warp, disfigure, or melt plastic in any way. The best solution for this even better than de-bonding sometimes could be using nail polish remover, considering that this will take most bond, plus much excess glue off of the model.

I might give the acetone a try. I have tried the de bonding agent, but it didn't work. The glue was too deep into the joins of the model pieces. Something that I could soak it in would be perfect.

whenever i wanna strip my models of paint or glue, i let them soak in brake fluid for 12 hours, then take a soft bristle toothbrush to them and rinse them off.... good as new!

Nail polish remover is a bad idea unless you like gambling with your plastic figs.

Heres why- the styrene GW uses is NOT consistant. Batches vary in content- sometimes this is noticeable as a color change- sometimes its not. Testing with a sprue will only work if its sprue from the kit the mini came from, which isnt always an option.

Snapping them apart, works fine if you're careful and didnt use too much glue. The freezer trick helps- as does working a slender tool into the seam to help work it apart. A flat sculpting tool is ideal for most, but I avoid the hobby knife here- its too easy to slip and do bad things to your figners or the mini.

Another option is a full soak, I suggest Powerclean or SimpleGreen over brake fluid(which is toxic, smelly and doesnt work that well). After a few days in Powerclean most plastic models assembled with super glue come apart easily, and the glue can be easily scraped off with a finger nail.

Can you be more specific about what type of powerclean or simple green to use? I have heard of them, but not used them before. I looked them up and see them as brand names with many sub types of cleansers. Thanks for the tips. I think that's the best option.

The 'tough task' cleaner/degreaser.

http://www.superclean.com/product1.php

Walmart usually has it in the auto supply section

Is it safe to put down the drain or do I need to do some special stuff to take care of the used cleaning product? I've soaked a few minis and the paint has come off, letting it go a bit longer to see if the glue comes off like it should.

If you used superclean its safe to pour down the drain. But- I'd recomend putting it back in hte bottle, or sealing it in a large tupperware type container. Ya never know when you might want to strip other figs in the future.