Sure, without giving away any secrets-
We print mainly test fit objects that are later fabricated "for real" from metals.
Some are domes and shells, others are pedestals and rings, and even monolythic product bodies and vacuum lids.
Lots of brackets, cases and electrical enclosures too.
To fabricate them initially from metals (often ultra high purity aluminum or stainless) can be prohibitively expensive if any changes are still anticipated or if they are just for "look and feel" evaluations.
Once all the feature and fit issues are resolved in plastic, then the real parts are fabricated.
We can 3D print parts from stainless steel powders too, but I have never seen or used that equipment personally.
Some parts that we have made are as large as 24"x24"x36" tall.
Quite a lot of them are in the 18"-20" cubed range.
They are very hollow (low infill percentages) as you might expect but are still surprisingly rigid and strong, suitable for fitment and visualization purposes.
Printing times can be upwards of 8-10 days for larger objects and routinely run into 30-40 hours for medium sized ones.
It depends upon the nature of the object, the fill density, amount of support material and so forth.
Our printers all have the capability to print soluble fill material, BTW.
I hope that answers your question.
I can't say much more than that about the nature of our parts, sorry.
BTW, I did fit a UPS to my home printer as I may have mentioned elsewhere, and feel much more secure after having a rather lengthy print ruined by a momentary power outage a few weeks ago.