About this 3D model

I started creating a vacuum table for the CNC machine that can be found at http://www.thingiverse.com/thing:49484 I had to print it in 2 parts. It will have to be printed in ABS so that it can be glued together using an ABS/Acetone mixture. If I see this works I will design the adapter to plug a vacuum cleaner into the table. I will also then design the top part of the table that will be a throw away part The table was designed to be used with this o-ring cord http://www.smallparts.com.au/store/item/orc00150n70/. I inserted the cord and it seems to fit nicely. There isn't too much of the cord sticking out of the groove so I don't think there will be leaks and I think it won't bend the top table. I might design the top part also with a groove so that I can have a double seal