Bad news:
Just right now, I contacted ED to cancel the Aluminum Case project (and he agreed).
Evil Dragon will start giving back the money right now; I will bear the costs for back transfer (as there is PayPal fees, and credit card transfer fees).
This means that every preoder will be repaid within the next few days readily.
After a long discussion in my company, we came to the conclusion that we do not see a terminal date when we can promise to deliver the cases.
At the moment we have so many orders from industrial customers which we can process with little construction work (whereas "little" is still a lot), that we cannot find the time to reconstruct the Pandora case and set it onto the machine. Even worse, my construction assistant is sick for an indefinite time, so we already work at the maximum load.
I am sorry, but after all this seems to be the best way to deal with the whole case.