Heh, good work, Roy. If you were ever able to publish that E-Book, that would be amazing but I assume you don't have the time with all that cel maintenane to take care of. That's a full time job in itself! :P
I think one of the main points to emphasise from Roy's explanations is to back each cel with flat, rigid, acid-free card, then bag it all.
We all know it's ideal to stack cels rather than pile them flat. This avoids undue pressure which can ultimately damage the artwork. The problem with storing cels this way (when not using a portfolio) is that they will curve and flop about at the base.
A board will eliminate this and save the precious trace lines on the face of the cel.
With regard to the plastic/wooden containers, I'm sure that plastic would be fine as long as the room temperatures are kept constant.
As Roy mentions, it may be a good idea to soak u any excess moisture. I'd guess you could use the little silica sachets that come in new shoes or electrical goods.
A while back, after some researching into the most suitable types of containers in terms of safety for the art and perfect dimensions, I choose a metal filing cabinet.
At 15.5" wide by 24" deep, each of the 4 drawers accomodate backgrounds/hankens perfectly and I currently use the large bottom draw to stack various settei- although I originally intended to file series of cels standing vertically.
I'm very happy with this cabinet and glad I bought one.
Although a little different in design, the 'Lateral' cabinets are great [Visual example here]
http://www.everythingofficefurniture.com/lateral-file-9.html
They're perfect for cels with BGs because the depth is 18" (Many BGs are often 14" in width).
You're thinking that at US$500, it's an expensive method- but shop around and check out the sales. I got mine for about $60 when a supplier was shutting down its business ;)
