I have tried various felts and velvets from Ebay, and I finaly settled on some 'Sorcerer' black velvet from "Richard's Fabrics and Trimmings". I used it to cover my DIY border and it soaks up any spill caused by the slight picushion I get from my ananmorphic lens. I'll also be using it to make the masking curtains. Do a search for 'Sorcerer Velvet' and it should be the only result you get. I think it's good value at £4 per meter @ 1.5m (60ins) wide. I bought three meters and I think it's great value for a complete masking system, plus extra to cover other things that may cause reflections (tops of speakers or cabinets etc). Gary.