First I had the wonderful idea of building a light table, then I went about it in the simplest way I knew how. I got a table!
This table was $10 dollars from a reuse center
Step 2: Aquiring Plastic
I decided that I didn't want to be tracing on glass because I tend to break all things glass so I made the tracing area out of plastic.
I found this nifty 11x14 sheet of .25 inch clear plastic at Home Depot for $3, it seemed a good size for the drawings that i'll be doing.
Step 3: Measure Once Cut Twice!
Proceeding headlong into the project, I measured the center of the table, and then traced out the dimensions of the plastic sheet to be inserted into the hole. Then I took the plastic outline and brought all four sides inwards by a quarter inch (0.25 inch) so that the plastic would have a lip to sit on when I was done.
Step 4: Circular Saw
I used a circular saw (to cut a rectangle, go figure) and cut out the inner lines (leaving the 0.25 inch extra from step 3). Using a circular saw didn't get me perfect corners so I used a screw driver and dug out the corners to my liking.
Step 5: Router? No i'm not talking about the interweb.
I borrowed a router, which is a tool like a drill but instead of bits that are meant to go into things vertically, this is meant to spin and be pressed horizontally against things and the sides of the bit are used to create lips and such for banisters or what have you.