I just wanted to ask you a bit more about the 3M films. This is really a great epiphany; and I think that although you mentioned them on the Light Farm that this is the first place where they're mentioend by specific product name(?).
How would you compare the subbing to DuPont 583 (PF melinex)? Both will be destroyed with pre-wetting of any kind but DuPonts is very resistant to abrasion and even oily fingers (trust me, I tested it... after eating fried chicken... ). How about the 3M stuff?
Also, what size did you get it in if you don't mind me asking? Is it in a roll, or sheets, how long and how wide? Did that company offer any kind of custom slitting or size options? I'm just rather curious about all these bits of minutiae.
Thanks again for bringing this to everyon'e attention; I'm quite excited by it.
edit: Here is a list of potential suppliers.