I have my X Carve in my Woodshop which generates a lot of dust that can settle all over things. I needed a way to keep this dust out of my X Carve when not in use. My original plan was to make this from acrylic, but I wanted to play with design so I went to Hobby Lobby and picked up 3 large black foam boards and some black tape. What I came up with is actually 3 Boxes and a Panel. There is one long thin approx. 5" x 4" by 36 inch box to cover each Y Axis Rail. Then a Box 42" x 13" x 10" covers the X & Z gantry. One side of each cover is 1 1/2" shorter on the waste board side to square it all up. All three boxes have cut outs where the rails and nema motors stick out to make them sit flat. All three boxes store inside each other and slip right under the machine. The fourth piece is just the left over Foam Board which just happens to perfectly cover the waste board.
I used the foam board to work out a design with plans to build it out of acrylic, but I kinda like this fine and it only costed me 15 bucks.
(3) sheets Foam Board 40" x 32"
(1) roll of black tape