I make them much like everyone else. I don't use 1/4" stuff except maybe on top. I have always used wood bottoms with holes drilled in them, but lately I have been using 1/4" peg board soaked in, or painted with, boiled linseed oil. I don't like wire, but it is hard to drill enough holes in regular wood, and they get clogged easier. I prefer 3/4 lumber, but one doesn't end up with as many scraps of it as one does plywood, especialy wood 10 or 12" wide. Many of mine are part or all plywood. I put them together with sheet rock screws, and screw them in with my drill. They hold much better than nails and are much easier to remove if one wents to change a piece. I usually have plenty of scrap so I don't keep them longer than a year or two. I make one for each doe and write her name on it...even with good cleaning, it seems a bit safer that way.