Medicare allows for mask cushion replacement every three (3) months, and a complete mask system replacement every six (6) months. CPAP manufacturers and vendors suggest these replacement schedules as well. In our experience, most mask cushions begin to deteriorate after about six months of use.
Hereâs what you do: 1  Figure out the length that you want your finished sleeve to be. On the outside of the shirt, mark that spot with a line. 2  Using a see-through ruler or regular ruler, mark a line 1 Â½â underneath the first line. Use the ruler to continue that line across the sleeve. 3  Repeat on the other sleeve.  Cut on the second line you drew.
You will also learn how to sew the original interfacing to the sleeve hem, cutting new interfacing for the sleeve hem, sewing the new interfacing to the sleeve hem, basting the hem, joining the lining to the sleeve hem, and sewing the lining to the shell by machine from the inside of the Jacket. Duration: 85 mins.