PandP Plasma table build

The PandP plasma table build has begun.  Been wanting one for years, but finally found the time to jump in. 

 

I'm calling it my "P and P" plasma table as I'm using a lot of plywood and plastic.  Plywood because I haven't found the right aluminum tube to use as a gantry yet.  And Plastic because i'm 3d printing the stepper mounts / belt reduction bits. 

So far I have linuxcnc talking to the 7i76 board and have been testing the motor speed and acceleration settings. 

But now I need some help with the water pan specs.  How deep should the pan be?  What gauge of metal should be used?  The pan will sit on the piece of plywood shown in the photo so it shouldn't have to hold up any weight on the bottom. 

Thanks for the help.  I've been really inspired by the builds posted on this forum!
Jonas

Thanks for the quick reply!

I should probably draw a picture....but let me make sure I got this.

the slats are 50mm slid into cuts in the L profile. Depending on how deep the L is cut, total height of the slats from the bottom of the L would be about 60 - 70mm.

So the top of the slats are below the edge of the water table. water level must be close to the top of the slats.