Why We Use TPU for Metal Detector Bumpers
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TPU (Thermoplastic Polyurethane) is a flexible, rubber-like material widely used in 3D printing. Its combination of flexibility, abrasion resistance and durability makes it well suited to protective accessories for metal detectors.
At XQuest, we use TPU to manufacture our search coil bumpers and control box covers because it offers a practical balance of protection, flexibility and fit.
The Benefits of TPU
Impact protection
TPU flexes under pressure, helping cushion knocks and reduce direct contact between your detector and hard surfaces. It won't prevent all damage, but it provides an additional layer of protection against everyday impacts.
Abrasion resistance
Search coils regularly encounter rocks, gravel, scrub and sand. TPU is resistant to abrasion, making it a suitable material for bumpers designed to take the wear rather than the coil housing itself.
Flexible, secure fit
TPU's flexibility allows us to design accessories that fit closely around specific detector components. Combined with the right dimensions and print settings, this helps produce a secure fit without the brittleness of rigid plastics.
Suitable for outdoor use
TPU offers good toughness and flexibility across a range of conditions. Its resistance to sunlight, heat and other environmental factors varies by formulation, so material selection remains important for long-term outdoor use.
Non-conductive
TPU is electrically insulating and contains no metal by itself. This makes it suitable for non-metallic protective accessories around detector components, including search coils.

Why We Use 3D Printing
3D printing allows us to produce model-specific accessories without the cost of traditional mould tooling. Designs can be tailored to the contours of individual detector components and refined to improve fit and function.
It also makes small-batch production practical, allowing us to develop accessories for specific machines rather than relying on generic, one-size-fits-all solutions.
A Practical Choice for Detector Protection
No material is indestructible, and TPU is no exception. However, its combination of flexibility, toughness and abrasion resistance makes it a strong choice for metal detector bumpers and protective covers.
At XQuest, we use it to produce purpose-designed accessories that help protect your equipment from the wear and tear of regular detecting.
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XQuest — purpose-designed accessories for metal detecting.