Remix of Allted's Simple CNC Table to make it parametric

I have been looking at redoing my table & have seen several designs for it. I liked Allted's simple design, so I made an openscad file for this using the dimensions of my table to get a visual of what different sizes would look like. I have set the default size to the size of my table which is 4'x3'x30". It should be easy to figure out what each variable is, but some names may not be obvious until you change them & see how the model changes.

Be sure and check the dimensions before cutting a