I'm wondering if anyone has experience with hand driven separators. I've got an old Lister which is in good condition. Yesterday I tried it for the first time, I washed the gearbox and put in new oil (sewing machine oil), and put in about 15 litres of milk, and tried it out. Talk about hard work, I only managed to make about a cupful of cream, and then I was stuffed. There's no way I'd be able to do the whole 15 litres. Is this normal, to find it so difficult, at first?