Not totally ineffective. It really depends on the fabric used. I use a tightly woven cotton, double layered, with a filter pocket. Filters can be made from: "Non woven" stuff, particularly something like polypropylene (think medium weight interfacing or the fabric type "bag for life", not the shiny plasticy ones) or hepa filter vacuum bags. The filters are disposable, the masks are washable and/or can be sterilised with a hot iron. The masks themselves, without the filter, still give reasonably good protection for non clinical situations.Marigold wrote: ↑Mon Jun 22, 2020 1:40 pmBack in March, before the lockdown, I could see which way things were going and so I bought a packet of masks for us on Amazon which claimed to give full protection against the virus. I put the packet away and haven’t needed to use them because we haven’t been anywhere in company with others. Except for when I had that very high temperature, around the time of the virus peak, and called 111 and I tried to wear one when the on-call doctor arrived. I found that I simply couldn’t get it to stay on round my right ear. The left ear was OK but although apparently symmetrical, the mask just wouldn’t lodge behind the other ear. So I had to try to hold it in place whilst talking to the doc.
Subsequently I found that all the masks in the pack were the same so I suppose I have a peculiar ear. I’ve now adapted one of them with different elastic round the back, for emergency use, but now I gather that it’s unacceptable to use surgical grade masks and you’re supposed to make an almost totally ineffective cloth ‘face covering’ as the shortage of PPE continues (with or without Swarovski crystals) and we have to sacrifice ourselves in order to satisfy the mantra ‘Save the NHS!’
Everyone was telling me that I should be selling them, because others were charging between €10 and €20 for them, but tbh, I felt it was little enough I could do. And I used fabrics that I already had. If I had to buy fabric, then I would have had to charge for them. Tightly woven cotton is quite expensive.