I keep my adult quail in 1/2" x 1" wire cages made specifically for quail, 1 ft tall, and the length & depth can be varied depending on your needs and what size the poop trays come in. The bottom wire can be made with The coated wire, which not only protects their feet, but lets the cage last longer, because any drips or leaks from waterers won't rust it, and the slightly acidic poop won't be sitting there eating at it between cleanings.

The legs of the cage attach to the ones above and below it, and the poop trays slide right underneath the cage. They are stackable up to 3 or 4 cages tall, depending on your needs. The coated wire is a bit pricier, but use it just for the bottom of each cage, and I believe it really does pay for itself... replacing the bottom of a cage is a trouble I would rather avoid.
I include sand boxes in each cage, for them to lay their eggs in and to dustbathe in. They are just little plastic bins/boxes/tubs that I choose so they fit in through the doors. I cut down an opening on one long side so they can easily get in and out, and fill them with sand. Generally I use rinsed play sand, since that's the easiest type I can get out in the middle of nowhere; rinse, let dry, full bins. The sand blends with the poo in the poop trays and makes a good compost, which will be appreciated the next year, especially for things like asparagus.
I've raised quail for years, and have perhaps had 2 or 3 bumblefoot problems the entire time out of many hundreds (1K+) of quail. Not only that, but the 1/2" x 1/2" wire is thinner, weaker, will not hold its shape, and will need replaced much more often. It also can't be used on any cage larger than a foot or so, or it will bow down so much a waterer can't be put in the cage. In my opinion, 1/2" x 1/2" is only good for temporary transport cages or the tops of brooder tubs.
As for the hatchlings and juveniles, i raise them on sand in big plastic tubs. I use clean cheap pillowcases to cover the sand for the first 10 days or so, until they know sand isn't the major part of their diet.

I rake and sift the sand every few days to clean it. I've made a litterbox-scoop-type thing to do that, and it works decently. I keep the quail separated by size, and they don't go in with adults until they are adult size themselves.
As for wood shavings, I save those for deep litter in my chicken coops.
Hope I haven't deluged you with too much information all at once. I tend to be bad about that.


For the TL:dr version - 1/2" x 1" wire is fine, especially if coated wire is used for the bottom. 1/2" x 1/2" wire is too weak. Cages should be about 1 ft tall. I give them sandboxes. The babies grow up on sand, covered at first, in their brooders. I keep everyone the same size together for safety. And I only use wood shavings in my chicken coops.
