Quote Originally Posted by Wobblycogs View Post
I'm seriously tempted to swap out the extrusion for some box section aluminium with a good thick wall. I can't help feeling that three pieces of box arranged as I currently have the extrusion would be equally strong. I'd almost certainly then fill the middle one with kiln dried sand to damp vibrations. The problem then moves to joining the box section to the gantry sides but that feels like a fairly easy problem - I feel version 6 coming on...
Then again.... if going for box section, why not go directly to Steel for it's greater rigidity ?

Btw, for me it all started about four months ago.... I was simply sitting thinking that it would be quite nice to be able to see the cut taking place on the router table, like one can see when making hand held router cuts.... And I started thinking "upside-down" router tables, and then there was simply no turning back...

That one single thought started my downfall ;-)