- Does it really block phone and Wi-Fi signals?
- A nickel-copper fabric like this attenuates RF when it fully wraps the item with no gaps. Partial coverage or open seams let signals through. Test with a phone or RFID card before relying on it.
- Can I sew it on a normal machine?
- It can be sewn, but the metal coating dulls needles and the cut edges fray. Use a heavy needle, fold or tape the edges, and keep the fabric away from bare electronics.
- Can I wash or iron it?
- No. Water and detergent corrode the nickel-copper layer and heat damages it. Wipe it clean and store it flat or rolled.
- Is it safe to wear against the skin?
- Nickel is a common skin allergen, so keep the fabric out of direct contact with skin. Use it as a lining or pouch rather than a wearable layer.
- How big is the sheet?
- It is about 1380 mm wide, 1012 mm long and 0.1 mm thick, so roughly 1.4 square meters of material.
- Does it need to be grounded?
- For RF and RFID blocking, a closed enclosure is enough. Grounding matters mainly for low-frequency electric-field shielding, which this fabric is not sold for.
- Where is the EMF Protection Fabric, Faraday Fabric, EMI, RF & RFID Shielding Nickel Copper Fabric, Light Grey, 1012x1380x0.1mm cheapest?
- At Amazon, for $29.99, as of our latest check.