Finished save for one letter (so frustrating); no questions at all about all the other clues. Really a magnificent puzzle. You get the feeling that the artificer is more of a benign challenger than a Moriarty-like phantom tweaking cranial filaments (filaments: endless life reversed...Stop! Stop the voices!). Anyway...Bedding material? Jokes, tucking end inside (5), missing first letter. Just drawing a blank; I hope it's a Brit thing.