Leaderboard

No cyano... I'm 99% sure the plastic is acrylonitrile butadiene styrene (ABS), the same as the binding itself. It's the same plastic as used for things like Legos. It's totally soluble in acetone. They dissolve the plastic in the solvent and it becomes an excellent adhesive. Cyanoacrylates can be tricky to work with since they cure almost immediately, and are difficult to clean up if there's any problem. Shelf life is short. It's great for quick touchups where you only need to adhere a small area. For doing bindings for hours at a time, the ABS/Acetone is much better to work with.