[Arran]

I bought some of the cloth power cord from Radio Daze a few years ago, the 18 gauge they sell is too thin, basically zip cord with a fabric cover, I've seen some old lamp cords that are similar in thickness, but not radio or appliance cords. From what I heard the A.E.S cord is thicker then the R.D cord, so more like the original pre 1936 Philco cords, Sundial Wire is another source, but there are probably others if you want to do an online search. If you can find some, there is a company called "Globe Electric" that markets fabric covered extension cords, I've seen some 5' ones in some local dollar stores, but they also market 10' foot ones I think, you may want to check around. Of course if the original cord is still in good shape, and pliable, and not rotten, then you may not have to change it.
Regards
Arran