Light boxes are usually used for sketching and drawing. Also used for viewing transparencies or photo negatives (do those still even exist?).
Composition tables provide a work area to cut and assemble art projects.
Here is the secret - use a "lens refill" from any standard kitchen fluorescent box. These are available at any big home improvement store. These come in different sizes and textures.
I am working with a 5ft x 3 ft glass table, so I got a 4ft x 2ft piece in "WHITE cracked ice" texture.
White lens come out opaque and work best for this project. Clear lens are obviously transparent.
Step 1: Gather Your Supplies
1 glass table
2 clamp light
1 pack of square double sided mounting tape
1 Tape measurer
1 Lens refill for a fluorescent light box
Step 2: Measure Out the Placement
Once measured and placed, pop a square double sided mounting tape onto each corner. If you have a rectangular piece, then place a couple on the middle edges of the lens for extra support.
This will allow you to have a clean and even working surface.