Space Base Board Game - Overlay

This is a remix from two different models:

https://www.thingiverse.com/thing:6840080

https://www.thingiverse.com/thing:4737089 

I updated the front overlay with additional guides for the left and right pieces, and increased the height of them to match the back pieces. 

There are two versions of the back:

NO Sleeves version - The back lifts the board to allow the cards to slide behind, and keeps them in place. About 3-4 cards can be placed before the cards get tight.

WITH Sleeves version - This includes 4 spacers for the corners and middle of the game, so it's lifted off the table, but allows for the space needed for the sleeved cards.