What is a poly-cap?

A poly-cap is a type of plastic cap often used in model-making kits, especially for assembling figurines or model vehicles. These caps, typically made from soft, flexible polyethylene, act as small connectors that hold parts of the model together without the need for glue. Poly-caps are popular in model kits because they allow for flexibility and articulation, which is particularly useful in models that need to have moving parts, such as action figures, robots or model cars. They are inserted into joints or slots and act as anchors for other pieces, enabling the model parts to move smoothly while staying securely attached.

Poly-caps provide both ease of assembly and adaptability. Unlike traditional glued connections, poly-caps allow for some disassembly and reassembly without damage to the model. This feature is especially helpful when you’re working on customising or repainting parts, as you can remove sections without worrying about breaking glued connections. Additionally, poly-caps help make the assembly process more forgiving; if you make a mistake, you can correct it easily by simply detaching the parts held together by these caps, rather than prying apart glued joints.

In terms of maintenance and long-term durability, poly-caps can degrade over time, especially if the model is handled frequently. The flexibility of the plastic may wear out, and parts may start to feel looser. However, if you're mindful of the handling and keep your model away from extreme temperatures, poly-caps can hold up quite well.