hanermo2, Cheers

The z axis ratios are way wrong -- as others have said.

So if you have 600 height you should have 300-400 mm width and depth for best results, and not less than about 250-300 in each dimension. - Column Width at present is 270, Y to the furthest point of the gusset from the face of the column is 190mm
Itīs dirt cheap , relatively.
All modern machines use similar methods with large sections and relatively thin walls around 10 mm.

I think I'm a but stuck with this as i already have the surface plate. I thought as the column was off an SX3 and i was using two size to side it would be far stiffer in the Y axis then the gusset plates would help the Y. I will change the gussets as advised by Jazz and may put some in the x axis but I've run out of depth in Y to stiffen it up any more, i don't want to move the column forward as i will loose Y travel.

What would the consensus be, move column forward and loose travel but stiffen the Y or not?