Quote Originally Posted by harry hills
EDIT: just found a bit of stainless steel bar which is almost exactly the right size, i'm just worryed its a tad thin at 10mm? what do you people recon?
I think its not the thickness which matters in your case, but the width of the bar, and also any holes drilled in the bar will weaken it, for example on Pacman, the bar they used measured roughly 500mm long, 3/8 thick and 2 wide made from steel - it got bent from the centre because the mounting hole was too big.

Out of curiosity, how are you going to transmit drive to the spinner?