There are holes in the bottom allowing you to push a finger up into the space and lift out everything.
Hm. This somehow defeats the purpose IMHO. I think, the 5/8" trays could be improved by making them akin to the 1/2" ones.
No feet on the trays. Feet is probably more common to use there although stubs works too, just not as well. Still, overall I give the Oberst an A- on his English (or should I be giving this grade to his Adjutant?)
Adding feet would be another significant improvement. I don't know much - in fact hardly anything - about 3D-printing, but I seem to recall that this is also a technical problem.
As for the language - even the ruling British crown is of the house of Hanover. So you could say, that the British are ruled by Germans, but prefer not to be reminded of it. The same goes for Lord Louis Mountbatten - the last vice-roy of India. The British 'adapted' the name of Battenberg to the more agreeable form of Mountbatten. So maybe, there was some backlash language-wise with regard to the Oberst. Possibly, some of his kin might even be called 'Marwise' off the continent. On the other hand, the Oberst has the shocking habit to drop a 'u', where it - by all means - is due. Upon my honor...
That depends on how much you're willing to pay for the printer
After that, the costs are relatively cheap. You can farm that chore out to someone else but then you are paying for their printers
-- jim
Since I don't know what things I should be 3D-printing besides those trays, I would probably farm that chore out. Either to some company doing such a service. Or to a friend, innocently unsuspecting of how much of a chore this would be, who has been so careless to offer this to me.
In either case, I don't have a clue how much cost to expect for roughly a "double" ASL-kit of the core modules.
von Marwitz