meras said:is that an olympic bar on a dip station? how did you attach it?
Well yes sir it is! I have found though that there are better bars availible now. They are usually preset with weights and does not have that increased friction in the middle which believe or not makes a small difference.
But to get to your question; As an old scout I simply used rope to tie it real tight. If you know your ropes you can get it tight enough so it doesn't rotate.