Polycarbonates are a clear alternative to acrylics when strength and durability is required. Commonly used for windows, machine guards and noise abatement shields, polycarbonate is a high-impact material also used for protection against accidental damage and vandalism. Polycarbonates come in clear, white, black, tinted grey and tinted bronze. Like acrylics, polycarbonates can be cut, routed, drilled, bent, tapped and glued.