Case : Led light cases ....
Well ,aluminium is a soft metal and easy to work with ..(drill ,cut,....)
A bench drill and a file set are almost mandatory ...
Some epoxy and rivets ,are also handy ...
Now ...
Regarding large sized cases/enclosures ...
Very usefull would prove to get some aluminium profile bars .
(not thick ..1-2 mm is enough ..) .
Of different profiles ... Angles ( Γ , L ) , or " Pi's"(Π) ,or H ..or other ...
With those you can make support bars ,attachment points / frames and more ....
As for the enclosure itself ....
24" x 24 " ....That's huge for an enclosure ...
One has to come ,with another idea to avoid pricey ready-made options ...
With a bit of "modifying " ....
These might serve well ,as large led light enclosures ...
View attachment 3276616
View attachment 3276617
And maybe at a much lower price than a ready made blank case/enclosure ...
Squeeze yar brainz...
Lots ov atha ideaz are waitin' to be discovered ..
Cheers .