KnarlyNick

Thanks for the tip and it definitely made it better, but the is still a slight deformation which makes the the nut and bolt not screw together still?

I recently bought a Ultimaker Original plus, its great but I have one problem and that is when I try to print a cylinder type shape, it comes out a bit like a square and not a perfect cylinder if you look closely in the picture and the nut and bolt cant screw in together because of that. Can you please help me with this. I am using PLA.