by Craig Browning » Oct 17th, '12, 16:41
My favorite cloth was actually lined with proper "lining fabric" the satin-like stuff used for the inside of a sport coat, vests and good quality dress slacks; it's relatively cheap but it serves an important purpose -- it keeps light from penetrating the front fabric which can be most anything you desire. The other reason I liked this arrangement is that the tube easily moves and is less likely to snag when you're working and too, you can place the lining sleeve to the outside when you roll the cloth up for storage or transport and thus, protect the side seen by the public.
I've had several different covers over the years and aside from the one above (which I actually got second hand, btw) the one's that were most common (from the magic dealer) were a valore type fabric and even corduroy in one case.
The Frame for the tube is typically 1/2" pvc just as you've mentioned. I've seen one (never used it) that had locking joints in the corners so that you could fold it down for transport but lock it open when working the effects, this may be worth investigating because of how convenient it makes things when traveling.
The other thing about your covering is to consider the setting of the act; if you are using the effect in a special theme such as the American Western Frontier (Cowboys) or a Jungle type act such as you may find in a theme park gig. Using fabric that looks appropriate to the theme vs. a shimmering Vegas type display, is something to bear in mind.
Best of luck!