(09-15-2013, 11:00 AM)JJJ Wrote: Sleepster may be right: I need a custom chin strap. Or at least modify one of the ones I have. Today I have a meeting where I will meet the woman who is a genius with sewing and fabric. I e-mailed her last night to ask if she might have some scraps of elastic material large enough to go over my head, and why I needed them. She replied that she will bring what she has, and also that she uses a CPAP too! Cross your fingers for me.
I now have a custom chin strap. The dear lady looked at my original chin strap as well as the SP-CHADJ, and listened to my story. After looking at them on top of the Wisp she agreed with my theory that the SP-CHADJ did not have enough material in front to hold the Wisp.
She showed up with all kinds of elastic from her scrap bin. One was the same width as the chin strap that gave me acceptable leaks but kept coming off. She helped me figure out the correct length to go around the top of my head, and then we worked on a back strap that would keep it from coming off. We settled on an X arrangement with narrower elastic material. We used bobby pins to figure out the best length and position. She invited me to her apartment after the meeting where she could use her sewing machine to make the chin strap work without bobby pins (except she left the parts where the back X connects at the top with bobby pins for me to adjust the back strap if necessary. I now have a very professional looking custom chin strap that is very comfortable and cannot possibly come off my head.
More importantly for people here, she said that elastic fabric is famous for picking up oils from the hair and skin. Even if you wash your face until it is squeaky clean before bed, oils will come out as you sleep. The oils get on the elastic fabric, which then attracts other dirt. The result is grime (she was not shocked to see the condition of my original elastic chin strap). Her advice: Soak the material in white vinegar (white only because cider vinegar smells) for five minutes, then wash it in your favorite dishwashing detergent. The vinegar cuts the oil and allows the detergent to do a better job.
If you live alone you really need to get a friend to help you with the mask and chin strap stuff. My friend is a genius, but anyone can see things that you cannot see yourself.
Oh, and before I left her apartment I asked what machine she had, It is a PRS1. So I told her about SleepyHead and showed her the SD card in the back of the machine. She has two laptops, but they are older and don't have an SD card slot. I ordered an adapter for her and explained to her about SleepyHead. Hopefully she will soon be able to see her data.