Hi Brian
Thanks for the message. I wasn't very clear. I've had my cylinder ground, but the bearing surface on each end of the cylinder is worn, so I need to machine them down to the next standard size. Unfortunately for me the mower has a 30" cylinder, so fitting that into any lathe may be a challenge! I'm not looking for a lathe that big, but it did get me thinking of all the jobs I could use one for! had tried my local men in sheds group, but unfortunately they don't have a lathe big enough. I did see mention of a model engineering group in Aylesbury, so I'll send them a message when the world returns to normal and see if they may be able to help me.
Thanks for the website recommendation. I think I could kill a good few hours on there!