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Last edited 09 Apr 2018
Construction staples are typically larger, thicker and have more chiselled tips than ordinary staples but they follow the same basic principle – a staple gun or hammer tacker is used to punch them through a material. Under some circumstances the prongs may bend back on themselves, as with ordinary staples, but in construction, they generally retain their shape, and simply bed themselves into a material, rather than passing through it to the other side.
The crown of the staple (the horizontal piece between vertical prongs) provides a greater surface area than other fasteners such as nails or screws, which means staples can bridge materials that are butted together. Staples also have the advantage that they can fasten a piece of material without puncturing it, instead having a prong on either side, e.g. fastening electrical cables to timber framing. Staples can also be easier to remove, without causing damage, or leaving a noticeable hole.
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