Good ideas @SetBuilder I was thinking I could have the table 4x4 then if I need it to be 4x8 I can add an extension. Maybe multiple extensions with various function if I need. Possibly one with a laminate top so I can use stain and glue on top without having much trouble with cleanup, another may be a down draft table. Possibly one could have a spot for a router. I'm planing in the way future when I have honed my skills and saved a couple thousand getting a dedicated table saw with router lift. Never really thought about making a spot for a router table. Great idea. What brand of casters would you go with?