Uniform thickness tool?

[Anonymous]

I feel as though there is a shortcut for this problem. In this simple 3D model, I need to "cut" out the excess volume from the bottom of my 3D model. The thickness at all walls needs to be 1mm. Is there a simple solution to "vaccum" the extra space out from the bottom? The top shows the compartments.. but the problem is the excess space underneath.

[JDMather]

Solidedit>shell

Attach your dwg file here if you can't figure it out.

[nestly2]

It's difficult to tell because there's no indication of overall size, but it seems that removing thiickness from the "bottom" would produce two pieces.  Is this the intent?

[JDMather]

My interpretation is that all walls are 1mm thick.  (see attached botto/top images)