I've got a good deal of wood scraps from other projects laying about and am thinking of making a colored epoxy table, something like this: 

[![enter image description here](https://i.stack.imgur.com/LEKf0.jpg)](https://i.stack.imgur.com/LEKf0.jpg)

Where the blocks are my scraps, the area between will be filled with epoxy, and the outside would be steel or iron (going for a modern industrial look). 

I usually don't frame tables, but then again, this is the first one where I'd be filling it with epoxy as opposed to running full length boards. So, the question is: with this type of build, do I need to be concerned about wood expansion and the wood possibly bowing up? 

Thanks!